No offence, but the little extra accuracy that the S&W offers probably won't be much use to you.
I mean, unless you're consistently nailing your targets down to a pro-sized spread, go with the beretta. Pistols are deadly hard to aim right, hence my assumption that your spread mite be a
little wider than any pistol's going to compensate for
again, I'm trying to say this nicely, it's not like I'm a crack shot or anything either, so please leave my head intact.