The quality of the Kel tec line is varied. In another incarnation they made the Grendel 380. Cool, tiny, light .380 POS. Loaded through the top, had an internal magazine. You can see the P11 precursors in the design, though. Then they made a version with a standard removable mag. Not much better. A lot of LEO's bought them as BUG's, but few carried them very long. They did work occasionally, though. I was involved in a case where the victim was shot with one and died.
When they entered their current incarnation of Kel-Tec they made the P11, whic was realatively good most of the time for what it was, a cheap, roughly finished, inexpesive 9mm with a bad trigger that was extreemly small and light for it's day. There were some that had functioning problems, but plenty that worked just fine. Putting the finishing touches on them yourself and doing everything under the sun to improve the trigger pull became a cottage industry. Kel Tec even changed trigger spring weight after a while to help out. I never had any problems with the gun, but never had any luck with the trigger, even with the light spring, and would not feel comforatble relying on the one I have fired (belongs to a friend) much past arms length in a dangerous situation. You (actaully he and I both) just have to work too hard to keep it pointed where you want it.
They made a .40 cal version that had some problems, and they dropped it from their line. I think they still make .40 uppers to put on your P11, but won't sell a whole .40 gun. Makes me wondrer when they make the upper, and make the lower, but won't sell them as a unit.
The P32 is a whole different story. I have 2 and LOVE them. NO FTF's. NO hiccups. I have qualified twice with one (have to shoot a score with anything I want to have handy during business hours) on courses that include firing from as far as the 25 yard line. Now to be fair, the one I use for that was sent to Ashley Outdoors for a big dot tritium front sight, but still ...
My buddy checked it out and bought one also. Same story, no problems. Just a gun that is only a little over $200 that you can conceal in a pair of running shorts that holds at least enough 32 rounds to get you out of trouble.
Have not ssen or shot either the old (metal) or new (some polymer) carbine, but will probably buy one when the .40 cal GLOCK mag version becomes widely available. (Because it just so happens I have a lot of loaded .40 cal GLOCK mags lying around at any given time)
. I'll let you know.