little sluggish on the acceleration but top speed is nice. momentum + tire size/diameter = very smooth over the obstacles. cornering can be had but with a bit more body english. i was only able to do 3 laps due to time constraints, but by the 3rd lap i was turning times comparable to my 26". the feel of the frame and the geometry is great. im 5'10" and got the medium 17.5" frame. i will definitely change out some of the touch points (grips, handlebar, saddle, pedals) actually i already changed out the stock spds for some time atacs. my gearing is 34/18 which works out to 54.78 GI i believe.