You may have been 'actively playing' for a while, but David gets no benefit from people who just play and tinker. He needs feedback on what works and what doesn't!
IMO you shouldn't qualify as a beta tester just because you DL the trial, and sign up on these forums.
Beta testing is about sharing your experience and providing the vendor with feedback!
Why should you get it any cheaper than anyone else on the High St. when technically, you've done little testing and posted no comments/feedback back to Fluxmedia
Especially considering that there are a sizeable number of us who have been actively testing since day 1, over 3 years ago.
Maybe limit discounts/promo's to people who've been listed with Flux since the original version 1.0 came out, and was then re-numbered to 0.9.1 or whatever it was. Way before any RC version came online.