Hi I had different requirements but like you some ideas about what I wanted. Did the usual internet stuff and visiting dealers. But found a visit to the motorhome exhibition in Birmingham invaluable as you can compare different models on the spot. I think its on soon.
Its massive so take a notebook and some extra will to live pills.
Found automatics hard to come buy but chose a model with a larger engine as an alternative, its nice to be able to overtake the odd tractor and keep the speed up when going up hills on busy roads. Love cruise control though.
Good luck