I have:
Adam A5X (front ported)
Yamaha HS8 plus H8S sub
Neumann K120 (front ported)
 
The Adams were my first monitors, not cheap yet they have faults which I'd like to pass on because it was part of my learning curve:
 
They "sound great", but as time went on, I discovered the bass ports boost bass around 50Hz, then drop off rapidly. This caused me to deliver bass-heavy material twice which didn't do my reputation any good. The reason is the front ports give the illusion of nice, tight bass but in fact you are not hearing the very bottom frequencies at all. Secondly, the (fantastic) tweeter does not manage to get into the upper mids. The crossover frequency is set to 2.5kHz, not the more usual 2kHz. So the woofer has to try cover this range, too, and it fails. There is a dip in the mids which means the sound is "scooped" and after some experience I found I cannot hear mid-frequency detail. But "scooped" speakers "sound good" and this is what fooled me when I was looking for my first set of monitors.
 
The Neumann K120s are front-ported but are very good. Strong in the mids, good non-directional highs from a conventional dome tweeter and better bass than the Adams (aluminium box instead of wood). But they are expensive.
 
The Yamahas are not too expensive (sorry to hear they are pricey where you are). I got them because the second time I delivered bass-heavy productions I was summoned to a studio where I was played back my material over exactly these speakers. And my boomy bass was all to obvious. The mids are surprisingly clear for an 8" which may be the reason the bass is weak (but real). What I mean by "real" is, if you have a sine wave at 30Hz, you will hear it. With the smaller Adams and Neumanns I do NOT hear it. But the lifted 50Hz fools me into thinking I am hearing full bass when I play a full production.
 
The Yamahas are, as you said, back ported. When I do my final check, I put them on stands away from the walls and I walk around the room and also into the chillout room next door to listen for any boominess
 
So some time later I added a subwoofer to take the bass away from the HS8s so I can get a sense of the bass when I am still doing pre-final work. But for the final mix I disconnect the subwoofer and just listen over the HS8s.
 
One thing that I learned: When I play normal commercial CDs (or even my own work) over the Yamahas or the Neumanns, the music sounds harsh, unpleasant. If I were a beginner, I would think they are rubbish. I know better now.
 
I also have some small computer speakers, one Logitech gaming loudspeaker set and a pair of really cheap M-Audio "Studio Monitors" with horrible, sharp-sounding tweeters. These are all just to check there are no unexpected resonances that might show up when heard over typical systems like these.
 
HTH. Good luck choosing. The monitors are the next most important thing after the microphone.

Thanks for our input, I think I've come round to the Eris 6. Read a stack of reviews and listened to some audio comparisons. No one seem have a bad word about them and few comments about them being good at low high listening and mixes translating to other systems comes up and don't tend to fatigue with long listening. 
 
 

currently have Presonus Sceptre S6s, JBL LSR305s, and Urei 809s...
 
I've listened to Adam, Genelec, K&H/Neumann, and others.

I love the Sceptres, but I suspect that has a lot to do with the 809s. Some of our biases come from the past<G>!

I also really like the JBLs, but they are a very different sound.

I've heard the Eris, and I'd say they sound a lot like the JBLs. I think most folks could create mixes that translate well with either, but I think you probably have to work a little harder to do so because, well, they both sound nice, and sometimes you want hones over nice.

Cool, that's kind of expected I guess for the 'jack of all trades' that I am seeking, these might do well. Being I've lost half my Hi fi Speakers, and I don't really want 2 sets in my room, then these could compromise well, if it means loosing a touch of cleaness for glitter. Mixing always ends up being the smaller proportion of their use to noodling, creating and listening to general music. I was going to with the JBL until I saw the build quality and the plastic fronts from the inside (On the article linked at the beginning of the thread).  

For the multiple uses you're describing, I'd suggest smaller monitors (5") with a subwoofer. I have M-Audio BX8 D2 monitors and love them, so I feel confident in suggesting the M-Audio BX5 D2 monitors.
 
I looked through Thomann catalog and would suggest the second least expensive sub they have, they Swissonic Sub10. Looks like a really good bang for the buck. Given that, and I know you said you weren't fond of the white cones in the Yamaha monitors, but you might want to consider the Swissonic ASM5 monitors that are matched to the Sub10. Swissonic is a Thomann house brand that gets good reviews.
 
Here are 4 links, 3 back to the Thomann catalog and a 3rd to a really good personal-use review of the ASM5/Sub10 pair. The review is in German. If you can't make enough useful info out of it and you're interested in the combo, let me know and I'll do a quick translation for you.
 
http://www.thomann.de/intl/maudio_bx5_d2.htm
http://www.thomann.de/intl/swissonic_asm5.htm
http://www.thomann.de/intl/swissonic_sub10.htm
http://www.hifi-forum.de/viewthread-100-2337.html
 
Edit: The reviewer stated that two ASM5 monitors + one Sub10 + cables cost him about 400€. The review was written about a year ago.

i a/b'd the presonus directly against the JBL 8's,
much preferred the JBL 8's for low end power,
but the presonus had a nice midrange.
 
i ended up with the little jbl 5's, my room is too small for the 8's

I hadn't considered a sub and 2 smaller speakers. I read you post a few hours ago, and have been lulling it over. I have kind of got over the white cones on the Yamahas, but it was the talk offatugue and brittle sounding high eeds that put me off. So I had a look at the swissonic option, with the sub, stands and either the asm5's or the BX5s its looking around 370 Euros. I think I'd rather getting a larger pair of monitors than add keep it simple.
 
It's a good suggestion though, gave me a good alternative to consider.
 
I think I'm going for the Prosonus ofver the JBL as I'm put off by the build and materials.
 
Thank for the suggestions
 
 

I've got a pair of Rokit RP5 G3's.  They are very nice, but I would say that the auto-off circuitry is a bit aggressive and may have a design flaw.  The first pair I got; when one of them turned itself off due to lack of activity, it simply would not turn on again.  I contacted the seller about this who said they'd send on a replacement.  Then the next morning, the second one did the same!  Turned itself off, could not be turned back on again.  So I had to ask the seller to replace both of them.  The replacements have not yet done this, but will turn themselves off if you're listening to quiet music and need a bit of a 'push' to turn themselves back on again.  The point of all this rambling is the potential hassle you *might* have in needing to return speakers from Vietnam.

Thanks for the warning.
 

Kamikaze
I hadn't considered a sub and 2 smaller speakers. I read you post a few hours ago, and have been lulling it over. I have kind of got over the white cones on the Yamahas, but it was the talk offatugue and brittle sounding high eeds that put me off. So I had a look at the swissonic option, with the sub, stands and either the asm5's or the BX5s its looking around 370 Euros. I think I'd rather getting a larger pair of monitors than add keep it simple.
 
It's a good suggestion though, gave me a good alternative to consider.
 
I think I'm going for the Prosonus ofver the JBL as I'm put off by the build and materials.
 
Thank for the suggestions

Cool. Just be aware that with the types of monitors you're considering, you'll NEVER get BIG bass. I can crank my BX8 monitors, and you can tell the bass freqs are there, but you can't FEEL them.
 
Since you blew a cone in your existing set, and based on some of what you said in your OP, well, that's where the sub idea came from. When you want to use the speakers as more of a home audio system, run the sub. When you want to mix music, dial the sub WAY back. Best of both worlds.
 
Way back in the 1970s, I had a set of 4 end-table-sized JBL studio monitors (brown grill cloth, black glass top, beautiful wood sides) for my quad home audio system. It was a BIG MISTAKE on my part to buy those monitors. I didn't understand the difference between speakers and monitors and frickin' LOVED the look of them. The only problem was, they needed to be played REALLY LOUD to sound GOOD, from a home audio perspective.
 
I was lucky to have neighbors (college) who played their tunes as loudly as I did! 
 
So, enjoy whatever you wind up with. Looking forward to your journey!