I have had two TT with slides and one without. The extra room is noticeable especially in the main living area. It makes a long narrow space seem more like a room. Adds a lot of floor space for our 3 dogs.
Each slide adds about 400 pounds depending on the size. Sometimes they don't want to slide or you run out of juice. Best to have a gen and/or solar panel and know how to manually close them.
Some things like the radio and CD player or a pantry can be hard to reach when then are closed.
All in all, I really like having one decent sized slide.
