Last time I was at home on leave I picked up a pmag with the window. I love that thing i also have some C Products 30rds with the orange follower great mags for the price. any way I wanted your opinion on the P Mag. Is it worth the extra 2-3 dollars to get the ones with the window over the regular P-mags? I mean its handy and cool that you can see how many rounds are in the mag and all but is it really worth it if you plan on accumulating several?