Paul,

I don't have any experience with those you listed, but do have a few thoughts.
Depending on how you plan to carry, the thickness and shape may be more of an issue than a few ounces.

I put in 14 miles yesterday with an old Kimber Stainless Covert, with a Milt Sparks IWB holster. For any 1911 fans out there, it's a commander length slide on an officer's frame.
Some thin grips also help. I've heard that the "super-shorty" 45s are pickier about ammo.


You could probably get a similar but lighter package with the old Kimber Compact aluminum. I only say "old" because I hate those Series 2s that screwed up Browning's wonderful trigger...

Doug