- Efficiency is a neverending debate. I use them because I don't like the feeling of slipping off the pedals and getting whacked somewhere in the general area of the tibia.
- Online shoe buying is a gamble as a few have stated. Fit is very important, so, unless you know exactly how a shoe will fit...
- I use MTB shoes for the convenience of walking around and the stiffness is also a never ending debate. My Sidi Dragons are the same as the Sidi Ergos that I tried, the difference is the treaded sole. Your choice is no less valid than anyone's.