We had a Reflex Texas sidecar rig that was originally built for a handicapped person.
I can not compare it to any other scooter rig but I was VERY impressed with the Reflex for tug duty.
Its on road performance I found to be better than the ural rigs I have tried in acceleration and handling.
Never had issues keeping up with or ahead of all but the most determined traffic around town.
Cruised nice at 55, topped out around 65.
Unbelievably practical, great gas mileage, cheap to register and insure, low maintenance