Different RVs will work for different individuals. Lots of styles out there, but it depends on what you want to do, how much travel and how much 'camp-siting' ... Each one has positives and negatives for each person or couple.
We personally like the idea of "one engine" instead of towing a 'toad' (Two registrations, two insurances, two engines to maintain) ... and we also spend lots of time 'off-road' and in national and state parks (smaller sites), as well as MCGs on bases.
But, the best way to do this is try them all, at least walk in them, sit in them, and think about your lifestyle while doing it. Ask the salesman to leave you alone in it - as otherwise, you'll hear 'a sales voice' and never relax.
Once you have the idea 'whittled' down a bit, then it's a good idea to rent for a few weeks or a month - it's a lot of money to spend on a "maybe I'll like this" ... better to try each first, in 'real life'.