I have lots of Winchester brass (that's all that was on the shelf, otherwise I would've bought Remington). We'll see how the longevity goes, because I'm shooting .38 special loads out of the .357 brass (so they'll hopefully outlive me).
Anyway, I don't get a good feeling from Winchester as compared to Remington because:
1) In another calibre, Remington put one extra in the bag, which was a nice touch, you know, in case you're 1 short. Winchester put the exact amount of brass in the bag, and I thought I was good, until I noticed that one looked odd. Upon closer inspection it appears it was cut to .38 special length, but stamped .357 magnum.
2) I don't know what Remington .357 new brass is like, but the Winchester stuff looks like it was cut off with a hacksaw; lots of burrs on the case mouth, and many aren't very square.
3) The primers go into the Winchester brass with varying levels of difficulty, some very easily, others with some effort. Obviously the cases aren't very uniform.
We'll see how they work out in the long run (I don't anticipate any problems, hopefully), but if I see any other brand on the shelf, I'll be giving it a go next time round.