I personally love ipb and have always loved their support. I have used XenForo and always thought it was basic. You had to do a lot of editing just to make it work like how you want.
Vladimir S. - TinkerHost.com
. | Unlimited Hosting For Unlimited Possibilities
Pure SSD Storage | LiteSpeed | MariaDB | Cloudlinux
Shared Hosting | Semi Dedicated | Reseller Hosting | Managed VPS