I would vote for the Bersa Firestorm. I think the Walther PPK platform is very fun and they are pretty accurate too. Very natural pointers. I have FEG PPK Clone and love it. I also have a NAA Black Widow that is very fun and can be accurate for such a little gun. Jim
I recently picked up a Mark III hunter and fell in love with it. Any of the Mark III's sound like they'd fit your bill especially since you're already comfortable with ruger. Good luck shopping and keep us posted on your eventual choice.