Personally, I would not have any appliance in a slide. I just don’t like the idea of the flexible lines moving back and forth. Seems like it’s gonna be a matter of time before something pinches or let’s go.
There are so many floor plans with dinette or couch, or both in a slide that I would look at something different.
Others have had no problems with kitchen slides and say they’re fine.
From looking at RV shows, I have a real hard time believing any one manufacturer is better than another. The fit and finish is pretty bad on all of them that I’ve seen. But I’m a woodworker and cabinet maker. My acceptance level may be higher than others.