Just something to think about: Define what it is you don't like about Windows, and then see if Linux will really fix it. Otherwise, you may end up less happy.
 
I know there are a lot of geek types that try to sell Linux as the most amazing thing EVAR but it has plenty of issues and limitations of its own. I'm a sysadmin by trade and we do Windows and Linux at work and if you think Linux is problem free, you've got a nasty awakening coming particularly with regards to audio/video production.
 
Not saying it may not end up being good for you, you just need to define what it is about Windows that is problematic, and then see if Linux actually fixes that (check with someone who is a professional, not a Linux fan). Also see if the problems Linux tends to have will be things that will be a big issue for you or not.

Sycraft
 Linux [...] the most amazing thing EVAR 

Unless you want to run real commercial apps an stuff...

If

Excellent info on the audio interfaces. As for what I don't like about Windows, it's not so much a functional problem as it is a control problem. When I buy a Cakewalk product I feel comfortable with it and if I ever have a problem with registration or a re-installation issue that they will take care of it. I don't get that feeling from Microsoft. Ever since i had to do a re-install of XP years ago & had to call MS & give them an explanation of how my motherboard died to get a registration code I've always felt uncomfortable with the operating system. I should have clarified that I'm already a Linux user for pretty much everything except DAW & Cakewalk is pretty much the only reason I need to use Windows.
I've got a lot of years of CW stuff under Windows that I'm not going to ditch but I'd still like to add a non-windows option along side. My last upgrade was to X1 producer but my computer is so old I haven't really used it so I still use Home studio XL so upgrading any further would not have made any sense. I'm planning on putting together a new computer soon & thus my questions about the audio interfaces. I've been out of the loop for quite a while so I really appreciate all the ideas you guys have given.        

AT
USB is probably best for long term.
 
I'm enjoying the Tascam uh-7000 in for evaluation at the moment.  Nice bit of kit.  I haven't messed w/ it much, but the DA is a semi step above my normal TC Konnekt, which has very good DA. 
 
@

 
AT, Let us know how it sounds with outboard pre's attached if you don't mind. This box has my interest...
 
 
Thanks

Great thread, I'm also looking for a new audio interface, I used to have an EMU 1820m but my new computer doesn't have PCI slots anymore, so it's time to get something new. 
 
I very rarely if ever record, and if I do, it would only be one set of vocals at a time.  Latency is important though because I play my soft synths in. 
 
I'm disappointed that focus right doesn't have quarter inch outs.   I've heard a lot of good things about RME, but they seem to be overkill on the ins and outs that I would never need.

Google sonar forums/ threads on the Focusrite Forte... it is exquisite.  Extremely high end at a modest price.  Doesn't bother with midi but all controllers are usb these days anyway.
 
I've owned several "decent" interfaces over the years (focusrite saffire pro 24 dsp, presonus 44vsl,  NI audio2, and emu 1820) but the Forte blows them all away in high quality mic pres, awesome direct in's for guitars, and an elegant interface. 
 
A/Bing it against the above and I was just giggling with joy. A way better deal than the babyface which I was also considering.  
 
 

@ Cactus Music,  your review convinced me, I went with the 6i6 as well so I would stay away from the USB power, ty for the tip.
 
As long as I get at least 10 ms latency no crackling, I should probably be happy.  

Thanks Mathew, I was a whole year looking and chose the 6i6 for reasons I stated in my review, To many poeple pick an interface just because someone else is happy with the one they have. Bad reason. We all have different needs and there is the perfect interface for each of us if you do your research. It's all about conectivity and monitoring.
Somebody above said the Focusrite doesn't have 1/4" outputs,,? which one were you looking at? They all have 1/4" TRS balanced outputs as far I can see. 

Yes, I think I just missed them on the back.