Have two Kel-Tecs. P11 and P3AT.
Both are reliable. Have fired the P11 700+ rounds and the P3AT 300+ times. The P11 ejector broke at around 500 rounds. Don't know for sure but understand they had a batch of weak ejectors some time ago and have rectified the problem. Called them and had a new one in 3 days.
Kel-Tec is neither a range or show gun. However, due to their size, weight and concealability I carry one or the other or both neearly every day and have Sigs, S&Ws, and Rugers in my collection.
Some degrade them due to their cost and looks but that does not matter to me.