I did an informal test this week. On Monday I rode to work (8 miles mostly up hill) on my friend's mountain bike with road tires. Today I rode my DT Mini. Total time difference = exactly zero. I liked the MTB's front shocks, but not the forward leaning "road bike" style seat handlbar arrangement. The Mini has a much more comfortable seating position for me even though I haven't yet received my new stem to really dial things in height wise (I'm 6'3"). I'm curious to see what differences, if any, I notice on the mostly downhill way home. At this point both bike seem comparable in performance with the weakest link being the motor