Top Two (2) Gas Class A's Newmar & Tiffin?

Are you looking at entry level or higher end? As an example a Newmar bay star sport will have pretty much the same entry level components as any other entry level RV. You start getting into Canyon star etc and you will start seeing a difference in quality. Frankly I haven't seen much difference in quality from any brand across the board on entry level gassers. One thing I like about Newmar is their slide mechanism. I think it's superior to Schwintek. Not that it's without issues, but I am certain there are much fewer. The second question is who will treat you better after the sale. I've never dealt with either company but it's a critical component. Because you will need post sale support.