I LOVE the feel of the full-size M&P, and can't stand the M&P Compact. Amazed that a slightly short grip changes it for me so much.
The SR9c, on the other hand, is extremely comfortable for me.
Quality is there in both, but I prefer the lack of safeties on the M&P.
Hard choice if they both fit you well.
Beretta PX4 .40 S&W - Beretta 92FS 9x19 Para - Rock Island Armory GI 1911 .45 ACP - Colt 1968 Detective Special .38 Spc. - Ruger LCP .380 ACP - Daniel Defense M4V1 Carbine 5.56x45 - Ruger 10/22 .22LR - Remington 870 Express Tactical 12GA - 1943 Izhevsk Mosin-Nagant M91/30 7.62x54R