You can build the absolute best system for your money by going with AMD instead of intel. All of my rigs have been AMD and they have all done me well.
For the cheapest prices and best reviews go to newegg. I've probably built 5 systems from that site and won't go anywhere else. I'm sure there are some others here that can attest to that, although many might have other views on AMD vs Intel.
I built a Killer AMD quad core setup with a GTX 570 superclocked with 8gb ddr3 for $750 USD. Granted I only got a 500 gb hard drive but that's about the only thing I compromised on. So far this rig has ran every game I've thrown at it with settings all on high/ultra on 1600x1200.
Last edited by Capita2JZGTE; 12-14-2012 at 11:00 PM.