9X19 mentioned the Glock 26. Obviously it's in a different class than the Kel Tecs. I have a G26 and a Kel Tec P3AT. For ease of carry and concealibility you can't beat the P3AT (or the LCP for that matter). I call it my ATM gun. Goes everywhere with me.
However, if I put the two together, the G26 is a fat hog in comparison. It's twice as thick, an inch longer, and about a half an inch taller, and considerably heavier.
Which gun would I trust my life with? Guess.
I've lived in this small town for 30 years, so it follows that I know most of its inhabitants and rarely see any unsavory folks (and as a former LEO I have been trained to notice). I can go to the grocery store, the gas station, walk down to the bank and use the ATM, and feel almost silly carrying my Kel Tec because life is so uneventful around here.
But - when I leave town the Kel Tec stays home and the G26 takes a ride.
And - when I go out at night in my town, the G26 rides along.
The other gun I carry frequently that I can utterly depend upon is an S&W Chief's Special. It conceals better than the Glock but not as well as the Kel Tec. Actually, I trust it more than either of the other two, but then I grew up with, and spent most of my life using wheel guns.
Whenever I get nervous about the Kel Tec's reliability, I take it to the range and shoot a box of 50 through it just to make sure. If it ever malfunctions - and I determine it's the Kel Tec and not the ammo or me - I'll probably quit carrying it. I wouldn't trade it in, and I wouldn't sell it. I don't want to pass on a problem that might endanger someone else's life down the road.