Welcome to the forums. IMHO, it's more important to know how many occupants and what length of trips are you planning. Then decide the length and floor plan that makes the most sense to you. As someone who bought new units (twice - eerk). Let me suggest this. Look at the Classifieds
right here - buy gently used for your first one. Then you've got a road ready camper and if a better one comes along someone else ate the big initial depreciation.
Are you familiar with the model names and the trim levels? Flying Cloud
nee: Safari, lowest price, normally with "mouse fur" interior, though the SE has bare aluminum and bigger windows. International
aka: CCD which includes specials like the Serenity, Eddie Bauer, Victronex, etc. Mid level, many laminates but modern sleek decor prevades. Classic & Classic Ltd.
Older ones called "Excella". Real hickory wood, older ones Oak, high end fixtures and countertops, the sky is the limit... over upholstered and curtained in my personal opinion
are good places to browse and compare options.
Before you buy - attend a rally - there's always an open house and most people are glad to show off their units. (AIRSTREAMS!~)