PC Peripherals Suggest best PSU under 4.5k

[Tanuj Gambhir]

I am confused between two PSUs:
Cooler Master GX550 and Corsair GS600.
Please help.
If anyone knows better than these two then please suggest.
Thank you.

 

[Crazy_Eddy]

Seasonic S12II 520. Antec VP550P.