Dang, M&P 45 single stack, that said, 10+1 and accurate beats the hell out of 13+1 and not, I'll still give em a good look.
If I'm not mistaken John Burns has one and can speak to M&P .45 accuracy.
I had a 45 Midsize for awhile. Great grip, natural pointer and decent shooter' easy to shoot well. Trigger is just OK.
https://www.glocktalk.com/threads/m-p-45-acp-4%E2%80%9D-midsize.1691546/
I IWB under a T shirt all summer and the MP45 Midsize was a tad large for that, whereas a G30SF works fine for me.
If you want to try one of the various size M&P 45s on the cheap here are some copshop trades. I've known the guy since the 80s and he's OK.
http://summitgunbroker.com/m-p45-full.htmlhttp://summitgunbroker.com/m-p-45-mid-size.htmlhttp://summitgunbroker.com/m-p-45-compact.html