Whats the real advantage of a compact or triple chainring for racing, beyond just providing more gearing options? Are we just sacrificing some top-end speed for the sake of easier climbing, or are there some subtle benefits to having a wider range of gears that Im not considering? It seems like most pro riders are still on standard chainrings, so whats driving the trend towards compacts and triples at the amateur level? Is it just a matter of marketing, or are there some real performance benefits to be had? Ive seen some arguments that a wider range of gears can actually make you a more efficient rider, but Im not convinced - can anyone shed some light on this?