Nothing Yeah: Garage door opener?

I just brought a new house with a garage,but it can not open. So now I am shopping for a new one, but I dont know which one suitable for me.

What should we consider when buying a garage door?

Screw vs chain drive?

Speed?

HP?

Which brand names are good and which are junk.

Please help

Answer:

ok this is the easist. Stay away from genie, overhead, and wayne dalton. Genies are junk and are made by overhead, and wayne dalton is having problems with some of their openers. The best to go with is a Liftmaster. It has a one peice rail and very good. If you do not go with liftmaster go with either a chamberlain or a craftsman. Now as far as chain or screw I'd say neither. Go with a belt. Belt drives are much quieter and work just as well. On Liftmaster belts they have a lifetime warranty on belt and motor. Belt drive is the only way to go. Now as far as HP, a half horse should be enough. The springs on a door do all the work. If a door is properly balance you should be able to lift it by hand with minimal effort. If you cant you need to get door fixed. If a door is in balance a 1/4 horse would be more than enough.