I've shot -- and currently own -- the full range of S&W 10mm mags -- from the yellow angled followers -- to ES and ES-1s -- as well as MS and MS-1s -- the later of which appear to have been overlooked up to this point.

I've never -- and I stress never -- had any of these mags EVER malfunction in a 1006.

One mag was a little touchy in a 1086 (although still functional and borderline reliable as it just didn't bump fully into battery on the final round) -- but worked fine in a 1006.

The problem there was the mag spring -- not the follower. Once replaced, the spring took care of the 1086 problem.

I consider the first mags just as reliable as the last generation.

All in all, I've probably fired 20,000 rounds of all descriptions through Smith 10s.