Hello, we have a 2007 Fleetwood Discovery with a full wall slide. We have had no mechanical trouble at all in the 2 1/2 years we have owned it. The only problem we occasionally have is if we are parked where the wind is blowing toward the side of the slide out. The awning over the slide will billow up and down with the gusts. It takes a pretty good gust to do it, but it is annoying. If you do decide to go with the full wall slide which we love for the room and the open feeling it gives, check and see if the awning has some type of wind block. I have seen them on shorter slide out awnings, so I am sure the newer rigs have them. Enjoy your new coach which ever one you decide on.
Dennis