Cinelli Gel tape.
I love the stuff as its gel backed and not tape backed so its easy to remove and adjust. And it feels great to me. Plenty of cushion but not so much that I cant feel the bar. Many hand positions, as has been discussed, is most important to me though. The bars I use are full C bend with ample room on the ramps. That way, I have the tops, ramps, hoods, and drops to use.