For 7 Years I carried a Walther PPKs every day due to the size. .380 Auto isn't that effective, but I never had to use it either. When I would buy a new suit and the tailor would ask what side I wore it on, I would always say, right arm pit! I am left handed and have a left dominant eye, though I shoot a shot gun and rifle right handed. Wasn't what he meant, but he soon got used to it. (Jason, I was real active SPCC at that time)
When I had the gun shop, I sold a Bordachowsky .25 ACP to a guy that had to use it, with pretty poor results. He has 7 or the 8 slugs that were recovered, mounted on a Walnut plaque with a life size picture under Plexiglas also mounted on the plaque. But that is a whole other story.
I like my S&W 645, but it is little hefty. SS, Double Action 45 ACP. I have an 8 3/8" Model 29, but only Dirty Harry would wear that under a suit. It is in the hunting section only, though the 44 Bull Dog is a pretty strong defense weapon if you can hold onto it for the second shot. It was Son of Sams weapon of choice, which did not help Charter Arms sales out too much.
My FN H 57 (Five.seven) can penetrate most body armor, but I can not make use of the Super Capacity magazine in New York State.
I used to carry a Browning High Power, but do not really like Single Action Autos.
A revolver is always good as they do not jam. I have a S&W model 60 that I have carried concealed.
Have too many handguns to bother getting into the HKs and Sigs, but there are plenty of good ones there as they have become very popular. The Beretta 92 series has been a mainstay for years.
A lot depends how who you want to shoot with it and from how far away. I have always considered a defense weapon to be a 7 Yard, Belly Gun. Farther away than 21 feet, go the other direction. For a true defense gun, leave off adjustable sights and those things that can catch on a holster.
If you are going to regularly carry, Stainless Steel or Nickel plated will be a big help as salty body acid will eat a finish almost as fast as salt water.
That is my 2 cents worth.
P.S.- Forgot one important thing. What is your budget? In 1970 when I bought my PPKs with my FFL, I paid $71.00!
SUPPORTING MEMBERBobWest Nyack Aviation, L.L.C. New York, New York - East Hampton, New York & Warwick, New York email@example.com