I'm not saying I'd never buy a Keltec -- in fact I own one. It's less than stellar in regards to reliability though. Everybody puts out a lemon and for a while Keltec was putting out a few more than most manufacturer's it seems.
It's the only brand a local shop carries that I would tell a first time buyer to stay away from entirely for reliability reasons. You really don't want their first one to be a lemon. Mine's less than stellar and the shop owner said that the guy who bought one before me had failure to feed problems. Sent it back to the factory twice (might be limp wristing it I suppose) -- still did it.
They're reasonable, but the incident rate of hearing this is higher than any other brand out there. There designs are also smaller, lighter, and more potent than anything else out there. They're pushing the limits and they know it. Hence, a few lemons sneak out.
I like 'em, but NIB they stand a better chance of not working than Glock, Sig, Springers, Kimbers, Colts, S&W's, Rugers, H&K, Beretta, etc, etc.