I use Wilson's grease. It is a lithium based with some supposed additives that make it that much better. I doubt the additives do anything truly significant.
I like grease because it doesn't take much as it doesn't run out of the muzzle end of your gun when you carry. On the downside, some people have noted that grease is not the best idea for very cold environments because the grease will stiffen and hence runin the functioning of the gun until the gun gets warm. For IWB carry, that probably is not an issue, but for OWB, it would be.
Buy a tube of the Wilson stuff for the simple reason of just getting the little hypodermic. You can later refill it with the grease of your choice. I got a giant tube of lithium grease for $3 that contained about 50 times as much as the tube of Wilson's grease. So save the hypo. It is really handy. That being said, at the rate I am using the Wilson grease out of this one tube, I estimate it will be two-three years, relubing after cleaning each will, before I finish the first tube.
If you can, find a copies of Wilson's new gun video that shows you how to properly lube your gun with the grease. It really on takes a minimal amount. With over 600 rounds spread over two weeks without refreshing the grease, my gun never ran dry, never leaked grease, and there was still plenty of grease present when I field stripped the gun.
In regard to Boresnakes, THEY ROCK!
[This message has been edited by Double Naught Spy (edited 05-07-2001).]