Mine is the Corsair tx850, and the wife's is an ocz mod-x 700w. Rosewill would be suspect, though I don't have much exp. with them. I didn't even know mushkin made PSU's.
And what facts are you basing your suspicions on, pray tell?
Are you aware that the Rosewill Lightning 1300W
is internally the same psu as the Superflower Golden Green
Are you aware that both are excellent platforms?
You're basing your suspicions on your ignorance of the subject matter, aren't you?
My recommendation for PSU's would be Corsair, seasonic, Enermax, PC P&C, XFX, silverstone are the top choices. OCZ is "good enough". Mushkin makes good RAM, but I can't comment on their PSU's.
Do you happen to know that neither Rosewill, nor XFX, nor SilverStone, nor Mushkin, nor Corsair nor OCZ don't actually make
PSUs? Putting their stickers on ready-made devices is all they do.
Thus, the quality of their PSUs depends solely on which manufacturer they sign an OEM contract with and what designs they choose to purchase.
Forget PC Power & Cooling, they have been reduced to just another brand name owned by OCZ - and not a top shelf brand at that.
A general statement like "OCZ is good enough" (at most you could say "This one here OCZ power supply, based on ASD PSU platform and manufactured by QWE" is good enough) is inherently flawed.