Well it's looking like we're going to switch from IPB 3.2 with IPC to XF 1.1 with XenPorta as soon as our skin is ready.
Reasons? After using VB4 Suite, IPB 3.2/IPC and XF (on another site), XF is just the better fit for what we require. Simplicity, style and usability. And XenPorta is a really nice portal system, along with some of the other well made add-ons by the community.
Congrats to the team with this milestone. Nothing but good stuff since day 1.
Private alpha to first public release, to stable 1.0 and now 1.1. .. Nothing but proof that they can write something from scratch, be good at it, be the startup they can be, and do good by the customers with quality support and products.
I haven't had this much fun with forum software since the last 3.6 release of vBulletin.