Re: .380 - Walther PPK or Beretta
I would second the suggestion that you look at a Sig 232. Sig quality is very impressive. The 232 is similar in weight and size to the Walther, the Beretta will be heavier.
If you want to go a little cheaper(like maybe just to make sure the gun fits your needs without spending a fortune), the Bersa Thunder 380 is also a PPK clone, very reliable, at half the price. I've owned both a Bersa and a Sig, it's like owning a Chevy and a Cadillac, both will get you there, but the Caddy does it in "style".
The best things in life, are not things.