I have sold my g22 .40 cal to replace it with a m&p 9mm, and i have handled the m&p but not shot it. I have heard alot of good stuff about the m&p series, but some of the stuff i am hearing on this site about rattling mags, lines on the slide, discoloration, etc are kinda making me wonder if i should just go back to the proven darkside? I am really excited about my new gun(it will be here this Tues) but i just really have to have 100% reliability in my handguns, i owned my g22 for 2 years and it would eat any kind of ammo and never had a FTF OR A FTE, not that glocks don't have their problems here and there. I guess i just need a little reassurance on this subject and gun purchase. Thanks