My Kimber Experiances:
My Compact Stainless generally gets oiled every 100 rounds or so, the slide gets pulled off and the feed ramp/framerails get wiped off every 300 rounds or so, a fresh (wolff 22lb) recoil spring every 500 rounds, and I detail strip and clean it then. Unknown number of rounds, I'd say I've put around 3k through it, and I got it used. The FLGR was replaced with a standard one, and all the mags are Wilson 47-OXs. Otherwise its stock, and runs 100%.
My Classic Stainless gets a little oil every 100 rounds or so, and I'm right around 1500 rounds on the (wolff 16lb) spring I put in it when I got it. Stock, with the exception of the wilson 47 magazines, short guide rod and matching spring plug. I havent had the slide off of it, its never been cleaned, its never failed to go bang.
My Polymer Stainless (BUL M5) gets a little oil every 100 rounds or so, the slide gets pulled off somewhere between the 750 and 1000 round mark, and at 2000 rounds it gets detail stripped, cleaned, and a recoil new spring. Its the only one thats given me any problems. It used to have a bad habit of slide-locking with ammo still in the magazine. I replaced the slide stop with another (MIM) part from CMC, and never had an issue with it again. Then I got a rescomp magazine catch that allowed the use of P14 magazines, and the magsprings wore out faster than I was comfortable with ('bout nine months or so). I replaced them with wolff extra power springs and started downloading by one. Two years or so later, they still have those magsprings, and it runs 100%. I'd guess about 250 rounds of trouble, and since then I've fired 8-10k trouble free rounds. Oh, as you could probably guess, it also has the short guide rod.
Due to a few pistols with broken MIM parts at the range/store, and much more online, I wouldnt buy a Series II (which is what seems to suffer the most MIM breakage) unless I got a good deal on one. When a customer asks for my opinion, I tell them about the MIM issues, and while they arent common enough to
expect something to break, they're not uncommon enough so that it should suprise them if something does. This is one reason I think they reccomend the "break-in period," if something does break its generally during that time.
I wont buy one with an external extractor until they make one that doesnt need revised again, and again, and again (and again? How many times has it been revised anyway?).
As for a Series I, I'd buy every one that came into the store if I could afford to do so. So far, I've only collected three
As for current production pistols, I reccomend Colt and SA most of the time.
Sorry, I didnt mean for my post to be this long when I hit the reply button....