We have had both, no slides and slides. We prefer slides. Went from none, to one, to 3 and now we have 4 slides.
More room and only had one problem in the years we have traveled. It was fixed in about 3 hours with ordered parts and at dealer. We were a year out of warranty and the company paid for the repair and parts. I don't think many people have problems with their slides.
Carriage 5th wheel, all the bells and whistles,
5500 Dodge 2 ton