Reasonable from your perspective. All I can tell you is why I like this site over others.
The look and feel of the site (mostly because of vBulletin) is especially neat and easy to read and administer, as a user. Though UA has improved considerably since their upgrade, it is still easier to read and use this site. I like the layout of threads with the borders around each post, and the tools for posting. I also like the layout of the Today's Posts view, which makes it incredibly easy to tell which posts you've already read or decided not to bother with.
Even after their upgrade, UA "seems" cluttered to me. This site always "seems" fresh and clean. I'm not even sure how to describe this without sitting down with somebody with both sites up on the screen.
I have used one non-Access site that has the new vBulletin and I find it very difficult to respond to a post. That may be because of the way that site is set up. Everything else on that site looks and behaves about the same as this site, though...very clean and easy to follow.