As with any opener, there are pros and cons of each. The largest pro of a belt drive is that it is the quietest. They are the best for you if din is a problem because you have a room above or close to the garage. The only real con of a belt drive is that the actual belt itself can eventually wear out. Bolt drives traditionally had the pro of being very low conservation, however, in recent years screw drive openers are now among the higher maintenance openers available and they are the loudest.