If you go a Jayco get the roof winding mechanism checked thoroughly.........and the wiring.......seen a few examples of screws put straight into wiring
Goldstream are well regarded and hold up quite well to offroad travel, I had a 14ft one years ago and it copped a good flogging and held up well.
Not sure of the price but if you can get your hands on a bushmaster that would be the pick, but could be pricey. Have a squiz at some threads on MySwag, whilst its a CT forum most of the older guys are getting into caravans so you may find some answers over there.....you might find some secondhand units for sale on caravaners forum, but do yourself a favour and don't get to involved in the discussion, particularly the electrical threads.
Cheers