I like my Kel-Tec PF-9.
The little rail is a good bonus to me, since I'm always borrowing nifty little laser devices from the office where I work, but generally speaking, it probably won't factor into your thought process.
Kel-Tec says it's a 7+1, but the magazine that came with mine can only hold 6, but it feeds all 6 with 100% reliability, so I don't see a problem with it. Haven't purchased any extra magazines yet, but I plan to eventually.