Don't rule out an A8-6600K.
That's a quad-core part too, but you're not paying for the improved graphics of the A10 (that won't be used anyway). Sure, the A10 is 200MHz faster at stock, but I'm sure you could OC the A8 to the same.
Also, if you don't want to pay for the IGP AT ALL,
check out the quad core 760K.
It's basically the A8-6600K without an IGP.
Main: i5-3570K, ASRock Z77 Pro4-M, Asus GTX660 TOP, 500GB Crucial BX100, 2 TB Samsung EcoGreen F4, 16GB 1600MHz G.Skill @1.25V, EVGA 550-G2, Silverstone PS07B
HTPC: A8-5600K, MSI FM2-A75IA-E53, 4TB Seagate SSHD, 8GB 1866MHz G.Skill, Crosley D-25 Case Mod