The newer self-propelled gearing is not the greatest and does
strip out after a few years of use. It must be the plastic gearing that is used, where as the dial a matic's gearing lasts for the life of the cleaner. Also still looking to get the Wind Tunnel powernozzle canister, the lower level of our house is all laminate and hardwood floors with area rugs. See everyone next week in North Canton!!!!! Travel Safe!!!