Making a Gaming Rig, need help. :D

Im building an AMD or Intel computer, and I have 2 rigs in mind. I won't be overclocking or anything like that. I will be using it for gaming, basically. I don't plan on doing anything else with it. Well, besides ventrilo/music/internet. Well then, lets get to it!

In this corner, we have AMD, trying to stand up to Intel! Let's see what he's got!

Ram - Kingston HyperX KHX11000D3LLK2/4G 4GB 2X2GB DDR3-1375 CL7-7-7-20 (times 2)
CPU - AMD Phenom II X4 955 Black Edition Quad Core Processor AM3 3.2GHZ 8MB
Video Card - XFX Radeon HD 4870 X2 750MHZ 2GB 3.6GHZ GDDR5 (times 2)
Mobo - ASUS M4A79T Deluxe AM3 ATX DDR3 790FX

The rest of the computer doesn't matter all to much, since the rest would be the same. All of this only costs $1700 Canadian. (only?!, lol)

And then in this corner, who needs no introduction, Intel!

Ram - Mushkin XP3-12800 Redline 6GB 3X2GB DDR3-1600 CL6-7-6-18 (times 2)
CPU - Intel Core I7 920 D0 Stepping Quad Core Processor LGA1366 2.66GHZ
Video Card - EVGA GeForce GTX 280 602MHZ 1024MB 2.214GHZ GDDR3 (times 2)
Mobo - Gigabyte EX58-UD5 ATX LGA1366 X58 DDR3
This clocks in at $1700 as well!

With the prices basically being the same, which would be the best buy? Seems like the AMD would have the graphical power over the Intel one, or at least from what I chose. I will be gaming on a 46inch tv for the most part, if that will sway an opinion one way.

Things to note: I buy my stuff from ncix.com. I most likely won't be buying anything new after this for quite some time, I just need some performance now, I hate lag (I'll put my current computer specs below). Aside from not upgrading, which would be the better buy, and how come? (Remember, not overclocking either rig) If you also had suggestions on changing a part out for another, do be my guest. Thanks for your help, you guys rock!

My specs on this 3 year old machine:
Ram - OCZ DDR2 PC2-6400 ATI CrossFire (4gig in total)
CPU - AMD Athlon 64 x2 2.4ghz dual core
Video Card - ATI Radeon X1950 XTX 512mb (had two, but don't use it any more)
Mobo - Asus M2R32-VMP CrossFire Xpress 3200
You don't want to know what I paid for this back then... lol...

All right then. Assuming I choose the 275 OR 285 (going dual video cards, of course), I'm guessing your vote is for the Intel set up?

That's a good point, thanks for that. At those resolutions, would it be worth going dual video cards at all?

Thanks for your help!

Thanks for the tip. I guess I can wait. Is there anything else new coming out in the near future, aside from windows 7?

All right, thanks for the idea!