Not sure its the best but I have used asus in the past it don't get much better then this free 8 gig of ram as of now anyone else chime in here if cost isn't a problem I would go for this.
Running an ASUS M5A990 EVO with AMD FX-8150 (8 core) CPU and 16GB of memory.
4.1GHz @ 32* (C). SSD HHD (OS) and 2 HHD SATA II.
Plenty fast for a non-gamer.