Those saying you can't modulate with hydraulic disc, I have never had a problem with mine. I have a Kona Roast with a Shimano XT brake lever, Hope caliper (believe 4 piston), no idea what the rotor is. Never had an issue with not having enough feel for modulation of the brakes. If they are two twitchy, they only using one finger. That's all I have ever used aside from a couple panic stops when riding in Jacksonville FL.