Most of my handguns are compact 45acp pistols. Para Ordnance makes the Warthog, about 25 ounces and 10 rounds of 45acp. AWESOME little gun. Mine has NEVER once had a misfire or failure of any kind. Yes they are a bit pricey but they are worth every penny. And there are many lesser guns that cost as much or more than the Para Warthogs.One of the ffl's around here swears by the compact para ordnance line of pistols but they are a bit pricey.
I would recommend a Glock 30. Easy to conceal and has 10+1 of .45 ACP.