Originally Posted by jgwilliams

My answer is ... it depends. I chose carbon when I went for a new road bike, but decided to stick with aluminium for my new mountain bike. If you were to ask for my reasoning I'd have to say I'm not entirely certain. Having broken one carbon frame in a crash I suppose that did weigh on my mind a bit - much more likely to crash a mountain bike. On the other hand, I have a friend with a full carbon mountain bike which has been great for him, and his riding style is quite a bit wilder than mine. Very pleased with both bikes. The only thing I'd change if I was buying a new road bike now is I'd certainly go for disk brakes and quite probably for eTap or Di2 rather than mechanical.