I have a Kahr MK9 Elite. I bought it used from an FFL. Thousands of rounds through it, all sorts of ammo from high end defense to Wolf and never a burp, glitch, stall, FTF.
IMI -- I have three Uzis. The expense for the Mod. 45's is that they're "grandfathered" and can't be currently imported. The Jericho I have is flawless, and I didnt spend a lot of money on it.
Seacamp is custom produced in a small shop. Small and finely finished like a watch. NAA Guardian is almost the same gun, but you're paying a premium for the fit/finish/size of the Seacamp.
Kimber -- don't get me started. Warranted for only a year, and Kimber doesn't make ANY of the parts on their 1911's. ANY 1911 mag should function in ANY 1911. "Fussy" shouldn't "cost extra."