I've had 4 KT's, a P32, P11, P40 and P3AT. All of them are gone now. The P11 had a tendency to let some springs pop loose if you squeezed it wrong, the P40 was an interesting little pocket rocket, but only reliable with FMJ's or Corbon PowRballs, the P3AT couldn't get through a single mag of FMJ's without a failure of some kind, even after a break in, a F&B and one trip back to the factory. The P32 was fine, my SO has it now.
I've spent more time, money and effort trying to get KT's working than any other manufacturers guns I've owned. I like the PF9, but my experience tells me that probably only 1 out of every 4 will work right without some work, and I'm not that lucky or that interested in wasting my time and money trying to prove another low cost pistol.
At this point, I wouldn't buy another KT product unless it came with 200 rounds of break in ammo, a coupon for a free F&B and was guaranteed to function properly with at least one brand of premium defense ammo or I'd get my money refunded.
Sorry, but my time's valuable enough that I don't want to waste it saving $100. KT should raise the quality of their parts and make sure each gun functions out of the box before it leaves their factory. I'd willing pay an extra $100 for that.
But I expect it's too late for that, other companies have seen the market and are filling it now. Ruger has the LCP for about $100 more than a P3AT and Taurus is coming out with the PT709 Slim which will be about $100 more than a PF9.
Oh, and for you KT Kool-Aid drinkers. Let me head you off at the pass. Sure, it was all limp wristing, that's why my KT's didn't work right.