Hi, its not like I want to change anything thing but just want to share to everyone about history of Avid and their products now. I tried Grimeca before...the 8 I think...4 pistons....its ok but I rather have Hope M4. Grimeca is rough....performances is ok but not the best. Brembo...I never new they make brakes for bicycle. I thought they only do cars and racing as I have them on a WRX STi