Based on the above 2 posts, I'd say go for that Ruger if it fits you well. As for .380 ammo, check out the Hornady Critical defense 90 grain FTX ammo. It's almost as good as the 9mm ammo. Here's a link so you can see some of the ammo testing by caliber.
http://www.luckygunner.com/labs/self...llistic-tests/