They are about the same size and I've owned/shot both. For me the 360 shot better b/c of the big front sight. I now have the M&P 340 and can handle short barrel .357 (Corbon DPX 125 gr), but usually keep it stocked with +P.

IMHO you get more for your money w/the 360/340.

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Old Cop
LEO (Ret.)