TRD
Good quality and not very expensive really. Someone did tell they leak and I won't have anything but problems and recommended cometic, but well over 12mths now the TRD hasn't had a problem. I am probably a bit biased towards Toyota/TRD as I have a lot on the car already, I figured TRD would be the best as they know best! Advantages from using others like cometic is the availability of different bore sizes.