OK I've had enough Kahr .40

Get a glock.
I'm not a huge fan of them, but they work well every time. The only ones I've seen fail to operate are modified in some dumb fashion.
They're not the most accurate, the triggers aren't great, but they go bang every time and will hold minute of man just fine even when full of pocket lint.

If it has to be a metal frame, I'd be looking for a p226 from sig. I would never want to fully disassemble one again, but German police carried them in all weather, in leather, full of plenty of lint and gunk and they still worked great.

Most newer guns are junk. They're built because glocks patents expired and now the other big companies can cash in with knock offs.

Springfield imports marginal designs and then costs cuts them until they barely functions. Same with the s&w lines. The m&p was a great pistol when introduced, but over the years the quality has fallen substantially as they've learned to make parts last just long enough to avoid lawsuits.

Khar has always been a mixed bag. Good designs, poor execution with lots of variability. Probably too much outsourcing and acceptance by fit rather than to specs (cheaper).

I love Steyr stuff, but they rarely take the time to truly polish a design before launch. As a result, their higher asking prices for magazines and accessories wins up being their downfall.

Hk makes great pistols, but you'd need to cash in a retirement account to buy one and a couple extra mags. Let alone any replacement (maintenance) parts down the line.

Kimber has always been a joke to me. "high end" guns made as cheaply as possible. Their solo is a decent design, but there's too many better compact pistols offering more mag capacity and better ergonomics and prices for it to be taken seriously.

The new sig guns are marvels, but I agree that even the new p230 has got way too many small and moving parts in it for what it is. Look up some images of the striker assembly for a good laugh.

With all that said, the only one left standing worth considering is a glock. Some gen2 40s had an issue with deep chambers, but that's been long since addressed. Best thing to do is buy a 9mm and run decent hollow points, but I like 40 because it's rarely in high demand and when available it doesn't tend to command a super high price unlike 9 and 45.

Just my $.02...