Thank you. I agree ZBrush 2 is still a very powerful tool, even compared to the new Mudbox. Unfortunately I’m trying to run v2 on my new intel mac as my older PPC machine is poorly. I don’t have have a properly working version at the moment. I openly admit that the main reason I want to beta test is to have early access to the new version. Who doesn’t?
Would you mind taking a look at my site as I have work on there? Maybe you could make your mind up from that. Not an awful lot on there at the moment but that’s mainly due to waiting for the new release (see previous post). But what is on there you can see I have the slightest bit of skill. For the old guy I took a very unorthodox approach in creating it in ZBrush. Not just the morphs but the wrinkle creation also. I also ran into a few bugs with v2, especially with exporting displacement maps. Some really weird errors.
Although I probably wouldn’t be anywhere near as useful as some of your other guys, I do feel I could be remotely useful in testing out the new version. In fact so would most of the other mac guys here. The more the merrier. It could only work in your favour in getting out a solid release 
