Hi Ian, The Grasshopper has taken a little while to get use to, still haven't done any long distances but I think that at last I have it setup correctly, the front chain ring that came with the bike is the wrong gearing for around here, so have been experimenting with different sizes before i put a SpeedDrive on. Stability is getting better but hills are still hard to keep the speed up without wobbling all over the road. I plan to start commuting shortly about 22 miles each way, so will have to get the average speed up. I have been reading about the Scorpion, the Grasshopper is very well made so I would think that the Scorpion is in the same league, will test ride a Ice trike first in Falmouth, as that is foldable, but I think that HP will be shortly producing a folding Scorpion, Andrew