I really like the easy reading ability of the current VB layout and colors. I hope you can create something similar. I find that the stock Xenforo appearance leaves a lot to be desired (it consumes a lot of vertical page space). Xenforo's strength is the ease with which it can be customized. That can take you down the rabbit hole as I found out when I decided to do all my own styling. I couldn't find a pre-packaged style that I really liked. I also cut out a lot of the fluff built into Xenforo that wasn't needed on a motorcycle forum (
http://www.odsc.on.ca/.xenforo/index.php).
Xenforo functions well, but lacks some features that are common on more mature forum software. I have no idea how many addons are presently in use with the VB platform. It can be a case of gaining something new but losing something you rely on. It will be interesting to see what you do with the styling.