I think things will be quieting down soon.. Seems like they are. I am sure manufacturers have ramped up production and once they caught up and people run out of money there will be plenty for everyone
I have the M&P 9mm threaded version. I put in the APEX DCAEK kit and it is currenlty my favorite gun to shoot. That plus after breaking it in more and more it seems to even get better. Don't have a glock so can't compare, but I thought I would give my +1 for the M&P. Link to kit...