What is making you want to move from Woltlab to Xeforo? I use the core XenForo script and have found several areas that I wish that it had more ability. I've been looking at other offerings from the paid scripts (but that's limited due to what I can afford to pay) and I have serious questions why people want to move. Each has its core abilities, but if you need more than a basic forum it seems that other scripts provide more to the user? I've learned that the grass is not always greener.
WoltLab was a consideration of mine before I was offered a cheap license for XenForo ($25).