I highly recommend you rent as you've stated -- it's an excellent way to find out what you like and don't like. And to us some of what we learned was unexpected.I think that RV manufactures are trying to come up with new creative ideas to set them apart. Safari Condo has some unique ideas with all they’re plans.
When I first started thinking about buying a class B van I wanted to get one like the Sportsmobile Sprinter RB111s with a 72 inch dinette in the back and a bathroom behind the driver seat. Our family of three are renting one for a week next month. I showed the wife that it has a shower/bath so she’s sold on the idea but the more I read the more I like the idea of keeping all the tall cabinets in the back. I guess I’ll rent different RVs until I or we find the best for us.