I think you would be happy with an M&P40c. I have had two Glock 27s (at different times) and am not exactly a total recoil sissy, but never could warm up to them. In fact, I was considering buying an M&P9c because of the bad experiences with the G27, but convinced myself to try a 40c instead. It has worked out OK and was the right choice. The M&P40c is entirely different than the G27, almost like they do not even fire the same cartridge. For me, it can be fired both more quickly and more accurately - and one heck of a lot more comfortably.

I have not tried the new M&P45s in compact models, but my experience with my old Officer's ACP leads me to agree with NE450No2 that in 45 ACP, anything smaller/lighter than a .45 Commander is just not my cup of tea.

Since you say you "need" to have one, better act without delay! (You'll like it.)