One good thing about the CH stuff is that it will work great with what you have now. You know the programming and you know CH is built to last. I didn't vote cause I don't know much about the others out there.
i5-2500k @ 3.3, Asus P8Z77-V LE mobo Windows 7 64-bit, 8GB 1866mhz
EVGA GTX 670 FTW 2GB, 8800GT 512MB, 256GB SSD, 500GB WD, CH Franken-Potato (Stick, Throttle and Pedals)
TM Cougar MFD's, TrackIR 5, G15 keyboard