Originally Posted by
geezerwheels
maybe the best way to evaluate the question is gear ratios...does the 10 speed cogset give you better top end, or bottom end, or better spacing in between?
Most likely better spacing, meaning the jumps between some gears won't be so drastic. But that being said the difference between 9 and 10 speed, especially for a novice cyclist, will be marginal. I've ridden the new 9 speed Sora, and I'm impressed. It's a good bang for the buck, and a huge improvement over 2300.