What system is the power supply going to be used in?
What is your budget? And can you only buy from Amazon?
I would take the Thermaltake Smart M650W before the Cooler Master GX 650W.
im getting a intel core i5 3550
asrock z77 extreme4
sapphire hd 7850 OC edition
8GB 1600 bus RAM
5-6 silent fans
seagate 2TB 7200RPM HD