Still loving our Challenger 18 months into ownership! Has it been smooth sailing? Nope. We have had our share of issues. Thor and a good service contact took care of most items, some above our expectations. DH handled some small stuff.
We've made some modifications and improvements, and it's just about perfect.
The only complaint I have currently is that we can't quite cool down the coach to my liking in the heat of a Florida summer. But I have not yet run out of potential fixes and I'm not giving up yet!
We spend every free moment in our Challenger, and if we can't go anywhere, we use it in our own driveway.