I've had an SU16A for I don't know, 6 or 7 years now I guess, and I love it.
Late last year we bought a PF9 for my wife. She had a CZ RAMI, which she liked and shot well with, but which she never would carry because of the weight. I think the RAMI and the P11 are about the same size/weight, and I carry a RAMI comfortably almost all the time, so carrying should be no problem for most guys, just a bit hefty for my wife.
Kel-Tec makes an awesome product though. So awesome in fact, that you can rarely just walk into a well-stocked gun store and buy one off the shelf. They're always back-ordered, which says something about their demand, and demand usually says something about the public's perception of their quality, and in my experience, I'd agree with what it says about that. The PF9 was bought new and hasn't been shot a lot, but we did go through the recommended break-in plus another 100 or so I guess. The rifle has had several thousand rounds through it without a single hiccup since I've had it, and I bought it lightly used.
I'm sure you'll be happy with it.
Blues