I only use the cheapy premium,,, I have a NAPA wholesalers card and get them for $22 each,,,so instead of turning rotors I replace them,,,They are on all my (4) Acura's and Hondas. No problems,, my Local NAPA sells them to local Firestone repair w/ exclusive contract,, means they sell lots of them,, none have ever been returned for problems,,, the diff is ultra p has some kind of rust inhibiter and the Ultra 8 have pretty black paint where they think it might rust,,, They all come from the same manufacture in China,,, so what,,, Honda has suppliers in China??? doesn't stop us from buying Honda's..
