In my opinion, the biggest argument in favor of a B has nothing to do with space. It is the fact that B vans, and only B vans, are (by definition) built totally inside of a highly-engineered, robot-built steel shell. This has safety implications, it has aesthetic implications, and-most importantly-it has longevity implications. Sure C-vans look nice when new, but if you look at older ones, a lot of them get very shabby over time. I won't say that Bs never develop leaks, squeaks or sags; or that Cs always do, but if I had to bet, I know where I would place my chips.