Jayco Hawk Outback or similar? Will handle offroad if you take it easy and are sensible with it, the missus will love it too! My Jayco Dove Outback has been on beaches, rough bush tracks, corrugations etc etc and so far so good. If I tried to keep up with the "faster" campers on the rough bits I'm sure it would slowly rattle apart but over the last 7 years it has been great.
You've got to decide realistically what "offroad" means to you, and will you actually do it? There are a lot of offroad trailer owners that spend 99% of their time in caravan parks. Nothing wrong with that at all, but in my mind they could have had a more suitable camper for much less $$$ if that's all they were doing.
$55k will net you a fantastic camper, that's for sure.