The Aquabot Turbo T4RC has microprocessor-guided drive motors with an obstacle detection sensor that keeps it from getting stuck in tight places. With a large capacity filter of nineteen quarts and filters down to two microns, it is a very efficient cleaner. It has an all weather power supply, which some cleaner do not have. This keeps you from running out when it rains to protect the control box. It too has a four-year warranty with a 300-cycle prorated warranty. The filters on this unit can handle 5000 gallons per hour which makes it very strong.