New Egg and Amazon. Usually comes down to shipping. My last PC was almost all amazon.
I would recommend something like...
- Intel Core i5-750 Quad Core or an AMD Phenon II x6. $200 or slightly less
- Nvidia 460 series video solution ($200 to 230) Nothing wrong with AMD/ATI here you just get more bang for the $ with Nvidia at this point in time.
- 1TB HDD, 32M cache, 7200 RPM ($70)
- Asus or Gigabyte mobo (not that there aren't other great companies) ($150 to 230)
- 4GB of DDR3 ($70 and up)
- Some sort of DVD burner ($15 to 25)
- Case with at least (did I say at least?) three 120mm fans installed in it ($70 and up)
I find that Coolermaster, NZXT, and Antec are the best overall case manufacturers for the money.