We have had 2 Thor products. 2010 travel trailer (Keystone sprinter) and a 2103 Thor Chateau (see below in signature) and have enjoyed both of them. Only minor things have had to be fixed during the initial year warranty. But I agree with others that they are like any other. Of course they make the most RV's out there. So the chance for issues will be higher because of the larger number made. But based on percentage wise, I bet they are no worse than any others. A coworker had a Winnebago that had a water leak under the bed and an entire wall that needed to be replaced. We read many other brands out there that have issues as well. Thor does make different level of products though.