I have favored longer bike reach over the years as it opens up my lungs and I breathe more easily. This meant a custom frame and a specific length handlebar stem. Bikes for triathaletes were the first stock bikes to have what is referred to today as a more relaxed geometry. Bike shop personnel tend to focus on the customer's legs in determining frame size and this is where the new Specialized S sizing is a big step forward. The larger frames provide greater reach while keeping other dimension nearly the same..