I use 2 types. One is by Oury and are a softer rubber that look really good. The second is a dual-sport type gel that looks good- I think. 100s of little holes. I think they're from a company called Angra or something. I'll check at work tomorrow.
If your bars are shaking that much, however, it sounds like maybe yout tire bead isn't seated properly, fork oil is too heavy, it something. Try putting a "bar Snake" in the bars, use bar-end weights, or even better- get some Napoleon bar-end mirrors to dampen the vibes some.