I have a triple on my MTB, and since I am not in the best physical shape, it has lugged my bacon up several hills in town, which is where I ride it. We have some pretty steep places. I live 2 blocks from the Court House, which sits on top of the world here. It is dowhill in every direction. I would not be without it. I don't have as much experience as most, but I now what is working for me. I only ride my rode bike on the rail to trail, which has very low grades, it is nearly flat, and even I can run the 53 ring from time to time, no granny needed there. - Ted