I have been throwing my R-Pro Boss a lot the last several days and I must say that it does indeed work. I have added at least 30-50 feet onto my full throttle drives. I have outdriven holes that I have rarely been able to reach. AND they are great for rollers, they actually have been rolling farther than my other discs because the edge is so sharp. I love the feel of it too. I need more of them.
You have to be careful though, they flip over pretty easily. Mine is like 164 I think and I have to throw it hard hyzer to get it to go straight and if I whip it too much it still flips. Even with that, if I hit the sweet spot as far as angle goes, I get a huge drive.