It really was perfect timing. I knew there was no way in hell that I would continue with vBulletin...but I looked at all the other options and I was completely unimpressed. I was really feeling trapped...until XenForo was mentioned.
July 29th, found it from John on talkfreelance if I recall, and... bought within 3 minutes of it going on sale. Only delay was the fact I bought it from my cell phone while at work, I ran out to my car on a break in excitement