I went with Brown Dog Industries poly mounts. They're not much more expensive than good replacement OEMs, but comparing them side-by-side, they're MUCH more stout. I too had huge amounts of vibes when I installed the mounts, but went back and re-read the directions which warned of excessive vibration if the bolt is tightened too much. I backed the nut off the main bolt a bit and now I'ts really nice. There is NO MORE VIBE THAN STOCK when driving down the road, and slightly more vibe than stock when sitting still. I think I posted a step-by-step installation guide on this forum as well if you're interested...