I've been using vbulletin for about 3 years. I love xenforo but it seem that is missing some of features that I think it would make converting my forum system much easier.
- RTL (with this it would make my life easier)
- *Photo albums ( is recommended. what happened to my user albums if i import my VB to XF? )
- community groups ( I think it would be great if you use some of facebook layout on to how to display groups e.g. Pages)
- blogs (umm not interesting because it would be so much to do for XF's staff so we can get ride of this feature at this moment)
- avatar doesn't import
- media bbcode not displaying (e.g. youtube videos)