My personal perspective on just about everything I buy is quality over quantity. The initial cost of a magazine is pretty much irrelevant to me. My concern is reliability and durability first and foremost. Money comes and goes......mostly goes
......but at least I am left with some good hardware
.
I agree with you about the HK mags......they are well built.....but so are my GI mags. I have yet to test any and probably won't since I am not having an issue with my current mags. In fact I have seen the new HK AR-15 (in detail) and I don't recommend it to anyone. I have yet to figure out how HK has so many people mystified into paying so much for thier shit. I could really go into a tangent rant on this...............
Beta mags are fragile and reportedly less than reliable......I do not own one......they got the 'bling' for the folks that need that.
Colt mags are superior to Promags in durabilty, consistancy, and reliability......so the 'paying more getting less' arguement is moot in this case.