Need some advice on which PSU should I get.

[wingisme]

Need some help on which PSU to choose.. I have a list of PSU that is within my budget and need some professional to choose the best one for me and I will put the price as well.

Andyson 550W F550 80Plus - 89sgd
Andyson 650W F650 80Plus - 105sgd
Andyson F500M 500W Modular 80+ - 99sgd
Andyson F600M 600W Modular 80+ - 125sgd
Andyson F650M 650W Modular 80+ - 135sgd
CoolerMaster Extreme Plus 550W - 79sgd
CoolerMaster Extreme Plus 650W - 99sgd
Seasonic S12ll-620W Bronze 80Plus - 103sgd
Seasonic M12ll-520W Modular 80+ - 107sgd
Seasonic M12ll-620W Modular 80+ - 119sgd

This is the specs Im getting..
CPU:Intel Core I5-2500k 3.3Ghz.
MB:ASUS P8Z68-V LE Motherboard X-Fire/U3S6/GBL/HDMI(Either one of it)
RAM:Kingston 8GB/1333.
GPU:AMD Radeon 6790.
HDD:1TB WD Black.
OS:Windows 7 Home Premium 64Bit.
CASE:CiT Vantage 8818B Midi Tower PC Case.

 

[Okedokey]

Seasonic over any of those brands and the 620W modular.

 

[daisymtc]

Seasonic S12ll-620W Bronze 80Plus
Seasonic M12ll-620W Modular 80+