Man, it seems so inconsistent the luck people have with RV's. Like people have mentioned, when I read these types of discussions it seems like some people have great experiences with RV's generally considered less quality and bad experiences with super expensive, high build quality units.
I have a 2017 KZ Escape that had a bad leak when it was a year old that did damage to the floor before I realized it was leaking. It's still usable so I just sealed up the area it was leaking in and continue to use it. It's not leaking anymore and I don't want to tear into it to replace wood.
I also have a 2012 Lance camper that leaked right after I bought it through the skylights - I got both replaced and resealed. The electric jacks started having issues within 6 months of purchase. That brand folded so I had to buy aftermarket electronic controls which I haven't replaced yet. It's doesn't look like the easiest job in the world - at least to me. The fridge won't relight the flame when it's in gas mode and it's a fridge that isn't made anymore so it's hard to find parts for. Just one thing after another. And it's a Lance which I bought because I heard they were high build quality.
I'm in the same boat as the original poster of this thread. I'm considering living in an RV for a year or two with my wife and I'm trying to research and find out all I can. I like a lot of the floor plans of the Keystone trailers and 5th wheels I have seen and heard people with both great and horrible experiences. Some say stay away at all costs and others say they love theirs. It almost seems like I should just find a trailer with a floor plan I like, if I'm buying used, get an inspection, and from there just hope for the best and expect all sorts of issues and be pleasantly surprised if things don't go horribly wrong! I don't have tons of money to spend so I have to keep my expectations of what brand I buy somewhat reasonable.