Before you lock-in to a B you need to consider how you plan to use it, how much stuff you "Must Have" on your trips and where you will put it. Are the holding tanks sufficient for your camping needs, and also make sure you can deal with the limited bathroom configurations. And go get in one....
You can find many of the advantages of a B in Sprinter based small streamlined Class C's and or what some market as B+'s. More space, more options, more tanks capacity with very similar driving ease.
I'm not trying to steer you away from your thoughts, if it does fit your desires. Good luck in your hunt.