Actually the proposed slightly thinner Campy C10 i spoke of would still give you about 2000 miles. Remember Vaxn8r the very slight reduction i speak of is for the overall width, not in reducing the thickness and strength of the side link plates where the majority of the stretching takes place. Therefore by fitting some thinner rollers and link pins should make it about the same width as Shimanos 10 speed offering, while still allowing it to have the same durability as the present C10.