Ive had a few, shimano Deores are okay, but the tension screw gets hit off. Same thing with the Avid SD5, I would go for the SD7. Was by far the best brake I ever had, with heatsink Coust pads. odd to get use to, I'm use a loud brake. It works well, very well its just more a swoooch more hold but less bite I found. Never used ultimates as they are just that bit expensive for me, But I bet there stiffer than SD7.... Ali C is the main man so speak to though, Expert he is!