Just a thought - I've always wanted to make sure my equipment was better than my skills. Don't want the machine to be holding me back, you know! If buying a new component will make you happy, by all means go for it. But Gummee has a point: if a component is not broken, there is no need to replace it. I haven't noticed anyone going faster with more gears or a different style of shifter or crank. Once you reach a certain level of quality (well above wally-grade) you're as good as gear can make you. The racer boyos have the bleeding edge because they are paid to. If a few grams will make you faster, just make sure to take a good dump before your ride. And go ride your bike.