The only real "advantage" of the .380 is the smaller packages it's available in. Having carried a 9mm (the .380's big brother) in Iraq, it's difficult to convey the sense of being "without apparel" that you feel with it - and it's more "powerful" than the .380.

The PPK is a nice little firearm, but I think I'd look into one of the newer, compact .40s or .45s and skip the .380. Or maybe check into a big can ofpepper spray instead?

Sorry - while I own two 9mms, I purchased both before my life depended on one. Thank God for the M16/M4.