Need best bang for the buck upgrade

[thecoggy]

I recently had my video card die on me so I decided to upgrade and bought a 560 ti (actually I went through 3 of them PNY,NVIDIA brand, and an EVGA) the first two were DOA but the Evga worked for about a week and I was pretty impressed with it maxed crysis 2 No dx11 , BFBC2 was at about 50fps at highest settings, but I had to ship it back to Newegg. Now I decided to upgrade my whole pc mobo,cpu, ram, psu, and videocard. I have a budget of $800 and was thinking of going with an amd/ati setup instead of Intel to save money I also would like a better card than a 560 ti maybe a 570 or 6970. What kind of upgrades should I make? My current specs are below. I was able to bake my 8800gts512 I dont know how long it will last tho.

Q6600

MSI P43 neof

8800gts512

thermaltake tr2 550w

4gigs DDR2

 

[thecoggy]

"golden butt eggs"...........classic

Ive always been an intel guy Ive had this q6600 for the past 3+years and it still does OK. Nvidia as well Im still getting decent Fps in bfbc2 (medium settings 50-60)with 8800 gts512 If it hadnt died I probably wouldnt be looking to upgrade until early 2012. By then BD would be out and we wouldnt need to speculate on what it may or may not be able to do. But since I need to upgrade now I think I'll take the gamble save some money and go AMD with a 6950 and a decent Am3+ board(thinking ASRock Fatal1ty) for upgradeability I know it cuts into the savings but I went through 3 cheap mobos last time,