The problem is that I want both. But being disinclined to add a front derailleur I recognize that I need to make a decision. I was looking at a Shimano cassette that goes down to a 9 tooth on the smallest, but the price was more than I want to stretch to. I probably want the climbing more than the speed, so maybe I just stay with the 52 on the front and with the 10 speed up to the 34 on the back might be the best it gets.