I tried very hard to convince myself to buy the Sig Sauer, even had a heck of a good deal on it. Utterly reliable, very accurate.
I bought the M&P Pro for one final reason:ergonomics. It feels better, I can go faster, and it also is very reliable. I think it makes complete sense to get the gun that YOU shoot better, regardless of theoretical advantages.

You pays your money and you makes your choices.

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Science plus Art