I would be happy with either. When we were looking new, the Allegro Bus had a slight advantage over the Dutch Star in our minds. Perhaps this was simply due to the availability of Bob Tiffin to talking directly with customers, or potential customers in our case. I would not turn down either is the floor plan and deal worked for us.
We were at Hershey 2 years ago looking at the various coaches available. The Tiffin people locked my DW and I in a Phaeton with Bob Tiffin for almost an hour. What a knowledgeable guy! We were just prospects at the time and told them we were a year away from any purchase.
unfortunately for either of these fine brands, our present coach became available while we were ready to buy and the rest is history.