It depends on one's preferences. Most people prefer sectional doors because they're more functional and practical. They don't need much space in order to open up and if one of the panels is damaged, it's replaced separately. With one-piece doors, you would have to replace the entire door when they're dysfunctional.
Small garages need doors with limited components so that they won't occupy too much space. Roll up garage doors are ideal. They don't have the vertical tracks, overhead doors do, and don't need space as they move since they just roll up. These are the main features, which make them ideal for small spaces.