My current computer is now 3-5 years old now, some parts are 5 some are 3. Motherboard and DVD-drive giving me loads of problems. Gonna buy a new CPU tomorrow. I decided on almost every component except the gfx card. Currently I'm using the MSI N460GTX, a good mid-ranged 3 year old card which is still working perfectly. I've always been using mid-ranged cards since the Geforce Ti4200 and expect them to last for 3 years or more which they have always been.
Looking at the 660GTX cards, the N660Ti cards and the 760GTX ones and yeah I'm buying Nvidia.

New computer setup should look like this:
Asus P8H77-M LE mainboard + i5 3570 3.4 (Not sure to go i7, doesn't seem to be worth it)
Corsair Vengeance 1600MHz 8GB RAM (Might go 16GB: X3, Firefox and Paradox games seem to be RAM intensive)
Samsung 840 250GB SSD (seem to get rave reviews + I love Samsung's service)
Western Digital Caviar Green 2TB+1TB+500GB (All current harddisks, one housing Win7 the other housing WinXP)
<Insert GFX Card Here>
CM Extreme 625W PSU
Samsung DVD-RW drive
Coolermaster N300 casing or N500
Soundcard probably, currently using Creative Audigy 2 Extreme Gamer for many years now.

You can't go wrong if you buy another mid-range nVidia card. The 760 sounds perfect! Make sure it's a good quality manufacturer as well, like Gigabyte, MSI, EVGA or ASUS.

This may be less than helpful (like I always do, heh), but would you consider swapping your current card into the new rig to see how well it works out? Might be able to get by for another 6-12 months, in which time prices and processing power will shift again.

msi, asus and gigabyte have the best coolers atm. evga is loud.

personally waiting to see the newest radeon hd 9000-series later this year.

I've been thinking about the GTX 550 Ti as a replacement for my Linux box which had a GeForce 9500 GT. Am I thinking straight or is it just way too old?

I'm by no means an expert on graphics cards, but I have a 560Ti and it works quite well. All the recent-ish games I've tried work with high(ish) settings (two examples off the top of my head being Dead Space 3 and Bioshock: Infinite; both games run quite smoothly with the 560Ti). So if the 660Ti and the 760GTX are better, by all means, go with one of those.

If you want Nvidia then 760GTX is a great choice. If you don't have 250 $ then I recommend AMD/ATI : Radeon 7870 at 200$ or less.

You may want to check this out:
http://www.tomshardware.com/reviews/gaming-graphics-card-review,3107-3.html
http://www.tomshardware.com/reviews/gaming-graphics-card-review,3107-7.html

Good luck!

I've got an MSI GTX 560 Ti OCII, which basically means that it's about 15% overclocked at the factory (without ruining warranty), and I reckon I'll get another two years out of this thing. Granted, I don't play a lot of brand-new titles, but everything that I've tried seems to run on very nearly maxed settings still, and MSI even gives you decent overclocking software so you can rag the shit out of your GPU once the warranty's out. Make of that what you will, maybe it would suit your purposes or maybe not.

Hmm, seems like the 760 is the way to go. Yeah, my cards have always been MSI. Not sure if I should try Asus but I think I'll stick with MSI for gfx cards since my mobo and everything else is already Asus.

Thanks guys

AMD/ATI got an equal for GTX 770? I am planning to move to AMD from Nvidia.

Wait till next month.

Radeon HD 7970 is the top single core AMD card atm, i -think- in some games it is faster than 770 and in some slower, but dont take my word on it.

If you are not in hurry however, just wait for awhile - the new HD 9000-series should be coming out in Q3.

edit: oh, i wrote this already, guess hitting 30 has started to make me senile.

What resolution are you gaming at? I have a 32" LCD TV that I use at 720p and very nearly every game I throw at it, including Crysis 2 and Skyrim all run great at Max/Ultra settings, and I simply have an EVGA GTS450 1 GB OC'd to 822 MHz. I love this card.

1440x900
19" monitor

I like small screens actually, keeps my eyes from rolling around too much -> less tired -> play more games.