Try the Pro Tapers. I put on some Tag X5 CrHi Bends two weeks ago and ran a Hare Scramble and was unhappy with the vibration. My hands were numb an hour into the race and I had a hard time hanging on. The vibration was much worse than my stock bars with 8 onces of lead melted in each end.
Last week I filled the Tag bars with lead bird shot and rode about 70 miles of tight trails this weekend. 100% improvement but my bike weighs about 2 pounds more.
I didn't melt the shot, just stuffed a rag in one end, layed the bike over, filled it up, stuffed in another rag and put my bark busters back on. This may be the poor mans way of simulating Pro Tapers.