Best psu of these?

[Blitz Blitz]

Tier 1
Cooler Master V550;
EVGA GQ 650 or 750;
FSP hydro g 650 or 750;

Tier 2
be quiet! STRAIGHT POWER 10;
FRACTAL DESIGN PSU Edison M;
Seasonic M12ii;
Seasonic S12ii;

 

[n0ns3ns3]

Define best.
they all decent PSUs. they have different wattage and different price.
You can get any of them that fits your budget and answers your needs.

 

[Dark Lord of Tech]

I don't use tiers , but GQ isn't a tier 1.

Seasonic M12 or Hydro G or Edison M.