I have a question for the competition shooters in the house. I'm about to buy an M&P 9 CORE for USPSA and two-gun matches. Since it's got the Red-Dot, my understanding is that I'll be in the open division anyways. So aside from cost, is there any reason not to get the ported? it seems like if I'm going to be in the open/outlaw division I might as well get all the benefit I can from it.
I dunno- how good are you?
My opinion- most folks can't shoot fast enough to really make use of porting. It's certainly no handicap, if that's your question.