A VSD lift is more superior to all others because it will raise and lower your boat in about one-half the time of most others. This means you can raise your boat to greater protection. The drive trains on these lifts are very quite with no clicking of the winch gears or pinging cables. It offers a low-maintenance gear head electric motor. With a VSD lift it is environmentally friendly with no possibility of oil leaks. The industrial strength ball-screw is rated for 20,000 cycles at 10,000 lbs. And the best part is there in no winch cable to ever replace.