infernojericho :
...I personally prefer a much, much larger screen size than quality.
Hi there. I appreciate what you're trying to achieve, and don't want you to feel I'm trying to invalidate that, but please consider the following.
PART1:
Depending on how your financial standing is, why not have your Viewsonic 20" (unless you really do have 20') "monitor" connected to one of your DVI ports (I assume you do have 2 DVIs as your graphics card is quite new), and connect the second port up to a 32/37in LCD screen, prob with 1280x720 or 1280x768, or something like that?
(Note: You CAN get LCDs - from 24in up to 47in+ - that support 1080p60. They cost three times as much though.)
For the majority of the time, you could leave the LCD off, depending on whether or not you like to keep power low, but when you're ready to game, tell your 2900 to send Crysis to monitor 2. (Or disable monitor 1. There WILL be an easy way to get Crysis onto that LCD...)
From everything you've said, it sounds like a good solution for you, if you can afford it, that is. You see:
(1) The resolution's lower, but you've already said/indicated you don't mind (or could "live" with) that.
(2) The quality of a larger LCD "TV" may not match a Mitsubishi/Viewsonic
dedicated computer monitor, but again, you've indicated you don't mind that.
(3) The screen size, esp at 37in (or above...) would massively dwarf even your 2 monitors combined. So in terms of having more "space", you'd be laughing (or crying with joy).
PART2:
If you have space, you may want to consider getting a "
fake projector". What's that? Well, you "hack away" (gently) all the "plastic" from an "old" 15" LCD, and with ONLY THE PANEL, get a DHP projector, and get it to shine the "contents" of the LCD onto an adjacent wall - hence why you need the space.
I wouldn't personally want to do it, as I like large and I like quality (I'm currently saving up for a 1080p60 Sony VPL-VW50 projector). However, you've said you want size, happily sacrificing quality and resolution.
On eBay UK, you can pick up the "kits" to build something like this stupidly cheap. Prob about £20. If you're happy to spend the time to try and get a 30in view (20" + 19" panels combined, roughly 30in), why not do it for a 80/100" view?
WRAP UP:
I've waffled quite a bit, so if you have questions, @inferno, please ask, and I'll try and help "further".
Thanks,
baius