Ah yes, the eternal question. Slides or no-slides. The question haunts POG members like a tick on a dog.
Here's the thing. Slides are great. You quickly increase your living space when open. If they are Prevost slides, you have great support . something goes wrong, you call Prevost 24/7 and they will walk you thru an answer and get you on the road. Heating and cooling are not an issue in my coach no matter the temp outside.
Just like everything else on a coach, you need to maintain the slides. No big deal.
Structurally, Prevost over engineers everything so thats not a concern unless I'm hauling goats.
My Coach is very quiet travelling with no air leaks, rattles, squeak, noise, etc.
With my kids, dogs, my wife and I there is abundant room to relax with the slides open.
My last two coaches had slides, so were past that question.