Bill, sorry hadn't noticed this post before. Doug (youngest) called home while on first tour in Iraq and asked for 4 HK magazines due to absolute reliability in all encountered conditions. His platoon sargent ( an old friend from a previous assignment) had let him use 3 of his extras. Doug had been duly impressed with their reliability. While home between tours, a rep gave him a couple of magpul magazines. He and his compatriots tried them out, could not make them malfunction, wear out or break, they ran over them numerous times with a hummv, shook the dirt out and continued using them without fault. Doug convinced his PL to order some for the platoon, CO found out, tried them liked them as well and when extra money came to the Company, purchased 6 for everyone. Doug's comment was: "Dad, they are even better than the HK mags, best ones I've ever used".
I believe you may have made a wise decision.