Looking at their literature, the Bighorn was introduced during the 2005 model year, which means that the dealers would not have much information on reliability.
On an anecdotal note related to reliability, the salesman that was talking to us at the dealership told us that three engineers that work at the nuclear plant in west central Arkansas had each come to River City RV ready to sit down and order exactly what they wanted. One of them had asked this salesman, or so he said, "do you realize what you have here?" Anyhow, the trailers were built, delivered to the store and the buyers picked them up. He said that he hadn't heard or seen anything from any of them since, which to me says that they probably had not had any problems. Of course I don't know how much they've used the trailers. The salesman did say that one of them was gettiing ready to retire and that he planned to do some traveling.
I think the salesman really didn't understand what he had toild me, since he was also telling us that if we bought a trailer, we shouldn't plan on any long trips right away so that all of the bugs can be worked out and fixed. He made a point of telling us that and also telling us that the dealership would work with us to make sure that every problem was resolved.
From what I've read here on the forum, I understand that problems should be anticipated and that they should be resolved.
However, I also believe that with a good quality product and good quality control, the need to fix anything should be the exception, not the rule, and should have been found and corrected at the factory. It sounds like that might be happening with Heartland Recreational Vehicles. We're going to look at them again.
I guess if we get serious about the Bighorn, I'll have to get the name of those 3 engineers.