the only thing i can say is i ride my cbt krypton more than every road bike i have. Why ? steel bike, i ride around 200 kms per week, i have bianchi and look modern carbon bike, and, ok it's light on mountain blablabla, but, my steel bike in columbus slx are definitly the most confortable bike i have, and after 150 kms, i can restart directly, i loose maybe 3or4 km per hours but at the end, i use my CBT for all type of profil. that why i have finish to thinking to sold my other bike. The problem is today, when you ride on sunday, if you don't have a full carbon bike, your a poor looser guy. But now i don't care, i like too much my cbt.