I was a beta tester, started with Sonar 2 (when support and beta groups were on the newsgroup). I worked on Sonar 7, but when S8 was released to the beta team I found that I was too busy to test the software and dropped out.
I enjoyed working with the Bakers. I didn't always agree with their decisions but they were professionals and they were very involved with bug resolution (at least at that time). I got to meet a few of them at NAMM shows - Ron Kuyper (sp?), Noel, Brandon and a couple of others. Being on the beta team taught me many things about Sonar - the final lesson being, I learned that I didn't have the time to beta test. But it was a cool experience.