Our site has about 1,600 members and 50,000 posts.
We use IP.Board (the forum), IP.Gallery (Photo albums), IP.Content (content management application), IP.Nexus (Store), IP.Downloads (file-sharing), IP.Blog (Blog)
The site is for paid members of an association. We may need some customization to the membership application and a report generator to pull data from the Xenforo database so we can mail physical product to our members.
If you are familiar with migrating IPB to Xenforo please contact me so we can discuss what can/can't be done and estimated cost of work.