I love the Boss! I own 6, some domey some flat. I don't find either to be to over stable for me. So, I hope that when they do the star run they get the over stabilization process. Also, I think star plastic will be a little bit more durable. The thin edge in champ just doesn't hold up to the big spike hyzers and tree hits. Anyway, fast as hell out of hand and goes farther than anything else you've got in your bag!
If you are looking for an overstable disc then the Boss is the wrong choice. Simply put...it is not overstable. My friends and I have been using it for longer tailwind drives. It is a nice Hyzer disc too. If you want "OVERSTABLE" go with the Xcaliber. Just my two cents.