I went back to OEM rubber sway bar bushings after running poly for 2 years. Having redone the whole suspension since then, I was chasing a slight clunk that was present when hitting bumps and being on a forward incline for example. It was a pain to get the last of the 4 bolts lined up and threaded, but it was all worth it. Backing out of the driveway, I noticed less rocking in the turn, and a short drive it just felt smoother in the steering wheel. The rears are being ordered now.
Interestingly, I had tried 30mm and 29mm bushings and both just didn't seem to be right. Perhaps my bar has some extra wear that created a wider range of movement, but I think the biggest difference is the OEM bracket is slightly offset on the front bolt holes, whereas the bracket from energy has both holes centered. It'll be nice not greasing them too; I couldn't find a good red grease with lasting power and it seemed to dry after a couple months with very little driving.