Good suggestion. We really need to find an opportunity to see some of these RVs from the inside to determine what is the minimum size we can be comfortable staying on for an extended trip, and on the other end of the spectrum whether I can see myself getting comfortable driving a Super C. My gut tells me to go big or go home - I always prefer open space. Unfortunately, 2 dimensional videos aren't really sufficient to help understand what it's like to be on the inside.It seems to me you are considering only the extremes - a 22 ft Class B vs a 38-40 ft Super-C or Class A. A class B is inherently small because it fits inside a standard van body, but you break that limit if you move up just a bit to a smallish Class C (sometimes called a B+). Starting at about 25 ft, that size offers much more usable & comfortable layouts (especially if it has a slide) without the drawbacks of a looonng vehicle.
Take a look at something like a Winnebago View or Renegade Vienna and I think you will find something that is both a comfortable traveler and an easy driver. Both are on the Mercedes Sprinter diesel van chassis.