I have been using the DP pads for over 2 years (about 20,000 miles). I have no squealing, they work well on my polished frt rotors, the std rear rotors as well. No increased wear on anything that I can tell. I do all my own maintenance, Just no problems what so ever. When I originally bought them the dealer cautioned against it, insisted I only use HD replacement pads etc. I started using them for one reason, to keep my wide whites clean, I got tired of the HD pads black dust. I had ceramic on the wifes RA Bird and it cured the dust problem there, so I decided to try them on the bike and they worked. The upside besides the lack of dust was they stopped better and had no squealing, they are cermanic backed which all but eleminates squeals. Just my experience, although I have a couple of friends who have since changed and are very satisfied as well, I am sure there are other brands just as good or better, these are just what I use. One thing for sure, they FAR surpass the Harley Pads, in what I wanted in a pad.