We have a 2011 Four Winds 28Z, and for the most part we really like it. The only real issue is it could use a bit more storage space. This is really only a problem if we are going for a long trip or staying somewhere for a month, but otherwise, we can manage. The wife thinks if it had a slide out pantry and more storage cabinets in the bedroom, it would be perfect... but then it would be a 31L.
One thing we like about the slide out is the coach is useable with the slideout in or out. Sometimes, when we are staying just for the night, or if we are not on level enough ground, we keep the slideout in. And usually the night before we leave a RV park we put the slideout in so that if it rains in the morning of departure, it the inside won't get wet if we have to retract a wet slideout.
We have never had any issues with our Schwintek slide mechanism, but then again, I make sure the coach is level before deploying it.
We bought ours used last fall from a Doctor who only put 5,800 miles on it. So far since May we have put over 2,000 miles on it. We have stayed about 50 nights in it so far this year, and we have not uncovered any real issues with it.
I did some minor maintenance fixes this year - things that the factory didn't do correctly, and the good doctor didn't catch. But again, all minor stuff.
The only real problem - if you can call it one, is the genny would not take a full load without bogging down. This was easily fixed with some carb cleaner, and the real reason is the genny was not ever used (less than one hour on the meter). You got to run those things once a month under full load to keep them in good working order.
Fit and finish - well it isn't the best, but then again, Four Winds is not a premium label. On the other hand, it is a lot better than a tent...
The only thing that works on a RV is the owner...