If you go to the forum section for model specific motor homes, you can identify some model specific issues. I think to answer your question, Newell, Prevost, Foretravel are usually considered the top quality/luxury models but most of us can't or won't spend the money for them. The rest of the brand/models can each good and bad qualities and supporters and detracters. Most folks find a brand or model they like and will be understanding of it's deficits and like the compromises they make because the positives outweigh the negatives for them. I do agree that you need to define your priotities as far as money willing to spend, amenties and lay out that will work for you, and other priotities and then begin looking at the motor homes that best meet those needs. When we first started looking, we spent two years of searching the web, driving from state to state, looking at motorhomes. It became pretty clear to use there were some brands/models, we just did not like. We settled on being able to afford and like the quality of the Monaco and Newmar. Ended up with a Newmar and are now on our second and have not been disappointed in our decision.
Dan and Kathryn DeBruin plus dogs
2005 Newmar Dutchstar 4009