No brand is going to be trouble free. And you will see that as people post about problems with every brand out there.
We went thru the same thing 7 years ago. Went to multiple dealers, 2 large RV shows, and scanned the RV forums. Narrowed our choices down to Montana, Cardinal, Jayco, and Cedar Creek. Back and forth, back and forth. Finally decided the Montana was right for us. And it turned out great. Still have it and have had almost no problems with it in 6+ years, 178 nights, and 19,000 miles.
But there there have been posts about people having problems with their Montanas, as well as their Cardinals, Jaycos, and Cedar Creeks. So I don't know that there is a good answer to what is best.