Cremo. I switch between the Original, Sandalwood, and Sage & Citrus. But I recently bought a couple tubes of Red, and will be trying it soon.
I used to switch between Nivea and Aveeno shave gels. I found them both to be a cut above the others, including the Gillette gel. But my son led me on to Cremo. I've been using it for years now, and really like it. In addition to a great shave, I'm always amazed how many shaves I get out of a tube.