If the Beretta couldn't be used, then I think, for my taste, it's a toss up between as M&P 9L Pro C.o.R.E. or a Glock 17.

Not really sure how the weight of the stock M&P Pro trigger would come in, but the stock trigger on the G-17 could be tweaked & still remain fully stock...........but as I remember, you are not much of a Glock fan.

MM