I really like the P239.
The downside is that the frame size to capacity ratio isn't so hot. It's a medium gun with a subcompact capacity. No way around it. But how many of us are carrying to get into 15+rd gunfight? I'm not. On the opposite end of the spectrum, it's slim, shootable, and maintains respectable ballistics with a decent barrel length.
I'm looking to add a P239sas in 357sig in the near future. Ideal carry gun (colder half of the year) for my tastes. Great gun.