I've had 2 different systems from Cyberpowerpc.com. The latest one I bought a year ago and with zero problems and runs FSX extremely well. I do suggest SSD for operating system and a SSD or VelociRaptor for FSX. I have the latter for FSX since higher capacity SSDs are quite expensive. One GTX 580 GPU does a great job in handling FSX as well.
JOE---- Asus P8Z68- V Pro; CPU: Intel i7-2600K 3.4ghz OC'd 4.6Ghz,
8G Corsair Dominator DDR3-1600, EVGA GTX 580, Creative Fatal1ty
Champion Series sound card, 2 VelociRaptor HDDs for Win 7 64 and FSX, 27" Samsung Monitor