I've carried Cz75s and Glocks, but I'm saving for the mother of all carry guns: The Sig Sauer P229.
Glocks and Berettas are good choices, as well as M&Ps, SW659s, Kimbers... The list goes on.
Tell that to the Mp5SD. The silencer (there is a mechanical difference, as well as a legal one) muffles the report of the weapon to such a degree, that the bolt closing is actually louder than the shot.