Normally, I would say Glock, but the only complaints I ever heard about Glocks came from guys with 10mm weapons. If you just have to have the 10, go with the Kimber.

The 10mm Automatic is potentially a very HOT round... My first experience with it was in a Colt Delta Elite...the recoil was brutal (and I carry a Colt Combat Commander .45 ACP with +P (185 grain Gold dots at 1150 ft/s) loads) but it was so accurate...

I like both the Glock 20 (the 27 is a great CCW but I can not imagine touching off full power stuff in it) and the Kimber pistols (especially the Raptors)...so it is a toss-up... I personally would choose the Glock (see below)

One thing I would add though...food for thought or so...the Glock 20 in 10mm Auto is the standard issue pistol for the Kentucky State Police...I have never heard anegative comment from any of those officers I personally know.

With 10mm ammo being hard to find, be careful with reloads...neither gun you mentioned fully supports the case heads at the feed ramp...Winchester offers a hot factory load with a 175 grain Silvertip hollow point that is awesome...be careful with some of the early factory loads...I believe Norma offered some with 200 grain HP at nearly 1400 fps...

IMO it all comes down to which one you can shoot the best (which one fits you better). A $1300 Kimber may look nice but its worthless if you can't get on target quickly for a first, second and even third shot when you need it. If a Kimber didn't fit my hand, I'd much rather have a $200 Bersa Thunder .380 that did and I could empty a magazine into the target's center fast.
If you are getting the handgun just for punching paper than get whatever trips your trigger. If you're getting one to carry for defense, get one you can handle and shoot well and quick.

I can't imagine needing an 10mm to stop charging paper targets!

Ever since I had a 10mm, I have yet to see any charging paper targets in my nieghborhood.

In the original post bluffhunter never said anything about targets. He was wondering about occasional use. And I did have a charging paper target a couple months ago. It grabbed a gust of wind and came right for me. Luckily I had my AR 15 at the ready with a full magazine. That target flew right by me but it was wounded pretty badly.

I've owned both. My experience:

Glock - Ugly, plastic, DA trigger (not my favorite). Accurate enough. Reliable as a shovel.

Kimber - Pretty, Steel (mostly), SA trigger (quite nice actually). Very accurate. JAM-O-MATIC. Horrible service. Horribly overpriced. I'll never own another (pistol or rifle).

-nosualc

ps - For those of you who own Kimbers and think they're the best ever? Good for you! I'm happy for you, but that was not my experience.