So, basically I am tired of using my crappy plain issued magazines and am looking for alternatives. Magpul's p-mags, with or without the window aren't much more expensive than standard GI style, but I don't know if they are reliable. I know that H&K mags are pretty much top of the line for M-16's, but I don't feel like spendin 50 bucks a mag (Yeah I know, how much is my life worth?). But if these seem to be reliable and durable then I'll probably get some shipped over here. Any thoughts from previous users?