Have had our 2013 KZ 280 BunkHouse Show Stopper for 3 years now on a seasonal site. Other than minor issues, love it!
Things to watch out for when you get it:
1. If it has the power awning, the wire from the motor goes into the side of the trailer. Second year, I found a puddle on the floor in the bedroom....chased it all around and couldn't find the source. Just happened to "bump" the wire and found that the material they used to waterproof it had separated from the inside allowing rain to leak in. Solved with silicone seal
2. Just had the Carbon Monoxide/Gas leak detector go on us. Was sounding in the middle of the night. No gas on at all! Disconnected it and got a battery CO detector
3. Had the inline circuit breaker mounted on the frame by the battery blow the first year. Simple fix...new fuse for $5
** Make sure you silicone seal the shower enclosure. It seems they use cheap seal and had that go on me
Other than that, wife and kids use the trailer for 2 solid months in the summer during summer vacation and it is fantastic! Good people to deal with at KZ as well when I had a few questions
Good luck!