I don't really like oxandrolone from bootleg companies. It's too easy for them to slip in a small amount of dbol, winny or something else to give an "effect" and save them a ton of money.
I have no proof that they do this, but since everything else is dosed funny, and some of it's completely counterfeit, I'd recommend staying away.
Would be nice if you had access to SPA (Milan) but it's really big bucks.
Some of the gals here must have used the brands you mention though.