If you are looking for a garage door then it may not be as simple as your first thought. There are so many different types of doors in terms of size, material, security features and mechanisms that it is easy to get lost in all the variants.
I would recommend asking a garage door specialist to visit your home to allow you to discuss what you want and the options available. If you have limited space and need the door to take up as little room as possible, then you may need a roller shutter door.
If getting home and being able to open the garage without getting out of the car is important to you, then having one that is controlled by a remote is essential.
Your garage may lead directly in to your home or you may store valuable items or a car in there. If this is the case then security should be very high up on your list. Garages can be an easy target for thieves and you need to make it as hard as possible for them to enter.