If you're reloading, get PMC or UMC.
I shoot blazer in 10mm, but not .357
Blazer .357 tends to be lame.
I've had case ruptures with blazer in 9mm, even on the tight chamber of a CZ75b.
UMC tends to be hotter, and I'd only use it if you're gun is really stout.
Also, UMC is having problems lately with jacket separation, the kind where the jacket stays in the barrel and the next round hits it and kB! (Very, very bad.)
I like magtech.
I don't like reloading nickle cases, but the ammo is better than PMC for me.
Best solution, shoot magtech while at the range, and look for range brass.
Pick up whatever range brass you find.
Easy, cheap.
Very elegant.