Like them a lot.. They drone a bit at speed, but not to distraction.
The only complaint I have is they hang lower then the stock pipes and I've touched them down a few times.
Basically, it's subjective, many who have purchased pipes sold them within a few weeks, some like them.. Find someone local to see for yourself..
Have them. They do have a drone that takes some getting used to. Not bad. Took two long trips this summer with them on and I was fine. Give a little more sound, not alot, and not obnoxious. They do sit a little lower.