I bought these "Aggressor" pouches by Phantom and I'm actually quite happy with them. As a matter of fact, I'm getting 3 more for my rig. I haven't used it for too long so I don't know what the logevity is yet, but right now they work great. The mags never get caught and they sit snug inside the pouch. The quick release flap is handy too.
http://www.evike.com/product_info.php?products_id=37569