verisimilar

What IS your budget exactly? Hard for us to actually recommend anything when we don't know what you are willing to spend?

Quality isn't strictly connected to efficiency. 80+ white is fine in terms of efficiency, but the quality depends on the actual PSU.

Remember. The CV650 is better than the CV550, and not just in the wattage (as I learned yesterday).

Yeah. If you can find a grey label CX550 (non-M) it's actually slightly better. 
 
It used to be that you can get a good 80+ Gold PSU for $100 USD, but recently that hasn't been the case.

If your budget is $75 max then this is the best option I see. At least on Walmart.

Why not this?
 
https://www.walmart.com/ip/Corsair-CX-Series-450W-80-Bronze-Power-Supply/51911786

It's a 10 year old group regulated unit that performs like garbage when crossloaded. You don't want this powering a 3600/2070.

That was the most obnoxious review I've ever read. It looks like it should be fine though, the reviewer generally liked it.
 
I have it plugged into an old i5 2400 system. I don't think there's even a graphics card on the system so it's not consuming much power.

why did i cause this lmao