This is my first post here, and I'm very curious about the future of xenForo, it definitely looks promising! I'm currently running vBulletin 3.8.5. The one thing that I immediately saw was that each post was too "close" to the next one. There is only a very thin line as a border between each post, and this makes it harder to read through a thread. As it is now, the posts flows too close without the needed contrast between them. I guess this can be easily fixed with using alternate styles, but since the default one should be as good as possible I thought I'd throw in my 2 cents.