-If I'm not overclocking should I still look at an aftermarket cooler?
-How is the motherboard?
-Is this an overall good build??? ?? (Not open to increasing price by more than 50$)
CPU: Great CPU. Check above link for CPU + Future-Proof Mobo Combo
GPU: ATI Radeon HD 5850s are great if you got the money. Get an XFX brand if you can. They have lifetime warranties They saved me $100 later in life with my Geforce 7900!
RAM MEMORY: DON'T GET OCZ!!! Dear God! G.SKILL, Corsair, and A-DATA are fine brands, just anything but OCZ. If you check NewEgg and forums, you'll see tons of people have had problems with OCZ RAM lately. Try the one below.
Two 5850's only perform about 3% worse on a 790X. The 790FX isn't worth the extra money IMO.
2 x 4850's vs. 1 5850 is a no-brainer IMO. The 5850 is plenty powerful and still leaves the possibility open of adding another 5850 later if needed. Going Crossfire right off the bat doesn't make any sense because it completely eliminates your upgrade path, some games don't scale well with multiple cards, the Crossfire setup uses more power, and the Crossfire setup runs hotter. The 5850 also has DX11 support. I see no argument for getting the 2 x 4850 setup.