As above, only get PSUs from a reputable manufacturers and models which have plenty of reviews on the Internet. A good quality 550W PSU will happily power your build.
Always get a good PSU, Antec, Coolermaster, XFX, Corsair (not CX), or else you are asking for trouble. Never heard of those PSU's that you mentioned before.
Redit.- I just check them and they are pretty bad PSU.
As above, only get PSUs from a reputable manufacturers and models which have plenty of reviews on the Internet. A good quality 550W PSU will happily power your build.