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 Python 4" .357 Magnum | Colt 1968 Det. Spec. .38 Spc. | Ruger LCP .380 ACP | Daniel Defense M4V1 5.56x45 | Alpine M1 Carbine .30 | Steyr M1895 8x56 | Ruger 10/22 .22LR |1943 Izhevsk Mosin-Nagant M91/30 7.62x54R | Remington 870 12GA