I recently upgraded my PC and purchased SPLAT after being away from SONAR for 8 or so years.  Back then, there were some real advantages in having my Roland JV syth, POD XT, and TC reverb hardware to do some of the heavy lifting for samples, guitar tones and reverb.
 
Now, with Rapture or Sampletank, Overloud TH3, and updated software reverbs, it seems like plugs may have caught up, and modern CPU's are better able to handle the load. 
 
I understand you still need real microphones, and am considering upgrading my mic preamps.  My old MOTU 2408 seems to be up to the task as well. 
 
But have you been moving to doing more "in the box" as the box has become more powerful?   Or do you still use hardware for the sound?  I'd be interested to hear your thoughts.

Personally I think there are some really good hardware guitar sims (if you can call those hardware) like the Axe FX II and the Kemper. Same for hardware reverbs. But those are definitely a price class above the equipment you listed - software equivalents of those should be at least as good. 
 
As for hardware synths, I think romplers have mostly ceased to be useful if sound quality is a concern, though they can still fill out a mix sometimes. 

Hey schwa, HA !  . . . the Roland JV80 synth, yes, still have one of those kicking around, but haven't taken it out for a spin in quite some time, since the VST synth plugins available today are so plentiful and amazing, and totally portable as well. I think if you've purchased some higher end hardware synths they are still totally usable, but the quality of sampled instruments available in recent years have made most of my old hardware obsolete.
 
I still use some hardware compressors in the recording process, but many other pieces from 10 years+ ago, are getting recycled one by one at the local electronics recycling depot.
 
I've noticed a lot of analog emulation plugins (eg. Cakewalk's Tape Emulator) in the market in the last few years, to try and re-capture the warmth that "in the box" digital apparently lacks . . . though the opinions vary about this.

Much comes down to preference and convenience really. Hardware requires more cabling and space, whereas software is often quick and captures dry signals. When editing, dry has advantages of gross changes after the fact (patches, etc.), but can also lead to an editting do-loop if not disciplined.

It is definitely worth playing with both options to see the pros and cons of each for yourself.

my Roland XP-80 and JV2080...both loaded to the max with expansions are both going strong.  Still use the Boss GT-100 and compressors on inputs, etc.  I find all those still relevant, depends on the user.  I did sell the ARP stuff years ago!!

schwa
I recently upgraded my PC and purchased SPLAT after being away from SONAR for 8 or so years.  Back then, there were some real advantages in having my Roland JV syth, POD XT, and TC reverb hardware to do some of the heavy lifting for samples, guitar tones and reverb.
 
Now, with Rapture or Sampletank, Overloud TH3, and updated software reverbs, it seems like plugs may have caught up, and modern CPU's are better able to handle the load. 
 
I understand you still need real microphones, and am considering upgrading my mic preamps.  My old MOTU 2408 seems to be up to the task as well. 
 
But have you been moving to doing more "in the box" as the box has become more powerful?   Or do you still use hardware for the sound?  I'd be interested to hear your thoughts.

This is somewhat of a loaded question.  Some will extol the virtues of hardware over software and vice versa.  The truth is, if you know how to use the software equivalent properly, you shouldn't need hardware.  Controllers are a different thing, and each to their own.
 
The issue really is in the hybridization of a system.  This is why...when you go in and out of the box, you only have a limited amount of headroom, and if you clip...that's it.  Once a signal is in the box, and it doesn't need to go out again, and because you have virtually unlimited headroom...emulator software can then perform as their hardware counterparts.  
 
Think about it for a second.  Most hardware has a sweetspot, and sometimes the sweetspot is just below or just in the red...in digital this runs counter intuitively to digital theory, which says the signal can't go into the red period.  So how are you going to get the desired effect of emulator software if you can't push the signal into the sweet spot?  And you can't if stick with the current digital audio theory paradigm.
 
My advice is if you prefer analogue, then use analogue all the way, of course still using the digital interface and software, but remember to get that analogue sound it's going to have to be got from the hardware...you probably also need some sort of summing mixer to really beef up the signal either in the mix or master process.  But if you can work out the digital emulator paradigm, which is more flexible...you probably wont shift back and your bank balance will thank you.  
 
Although I'm always buying Waves plugs, and of course I have my monthly subscription for Sonar...and by the way...WELL DONE ON LPEQ.  Beautiful plug-in, I've only had one chance to use it...but I noticed the difference right away.  It was very smooth, and as they say in the biz...very musical...made a huge difference to my master, which is what I use it for.
 
Ben www.1331.space   

I still use a hardware Lexicon MX200 Reverb/Effects Processor. I like using it to add reverb to the vocalist when they are singing.   Also, I still use my Presonus Eureka Preamp. when recording Bass, Vocals and Acoustic Guitar at times.
 
There are so many options within the box now, there is isn't much need for hardware except for obtaining a certain sound. 

I gradually made the  change  over the last 5 years,  only using hardware modules when I didn't have a VSTi that was up to the task.  I don't think I have recorded any of my hardware modules/synths in over a year. I would add Kontakt to the list of VSTi"s that made this possible as there are so many quality sounds available for it.  Sylenth was also significant in replacing my Novation and Nord analogue modelling synths. Also a big fan of Trilian for bass parts. 
 
I like to have an electric piano in the studio that I can just turn on and play.  The only other hardware that I use is an Avalon 737 channel strip (20 years old and still going strong! ) on vocals and acoustic guitar,   and occasionally a Roland HPD 15 to play percussion  parts. 
I certainly believe that armed with Sonar,  a good keyboard controller and half a dozen VSTi's you can create most anything.  Another huge advantage of VSTi's is that issues like syncing synth clocks and sample rates and restoring patches are a thing of the past. 
 
 
As far as reverb and other FX go it is a no brainer.  Once the sound is 'in the box'  I see no good reason to bring it back out until it is done:)  Vst fx have come a very long way. 

I do a lot in the box, but as a guitar player I still use HW. I use guitar synths quite a bit - VG-99, GR-55, SY-300, and EHX Key9.

I think hardware can still be useful. I have a DBX compressor that I love. What happens to sounds going through that thing I don't know, but what I do in the box does not produce the same result.