The biggest obstacle in making 'that final decision' is whether we'll lose our traffic + ranking after migrating to XenForo! We 'suffered' a *lot* when we moved from vB 3x to 4x and do not want to repeat history.
I absolutely love vBSEO and the good things it does. I also know that XF handles SEO quite awesomely.
Can someone point me to the threads that answer my question and if possible, share first hand experience of migrating an established forum (vB+vBSEO) to XenForo? How did Google respond? How's the traffic 1,2,3 and 5 weeks after the move?