Just bought an AR-15 (had to go to three different shops, got the last one too! No AK's in sight and not looking good so I guess the AK v AR argument has been decided for me by the election results.....I digress..) and wanted to know some opinions on good 30rd mags to stock way up on. I have seen some great reviews of the Magpul PMAG around and am not opposed to plastic. Have heard great things about the HK mags but they seem too expensive. Any input welcome, thanks!!