any opinions on these?

If you're talking about the 9 rd mags, they are mostly junk.

If you need 10 rounders or less, Magpul is the answer.

thanks. i suspected that. i saw some at an estate sale, but didnt buy any

Magpul makes great mags

agreed.

Lancer makes the best mags.

What makes them better than NHMTG /Okay Surefeed or even better than Magpul?

The original Colt 20rd GI mags are my favorite. The 5/9/10 rd Colt with plastic base are crap.

I still have a bunch of Colt 20 rounders that are almost 40 years old and they still pass muster.