I have lots of heads I resharpen the blades on. Sometimes if a blade isn't sharp enough out of the pack I will sharpen it before hunting. There is no rule that says a heads is supposed to be one shot and done. I have a Slick Trick I dunno how many animals it's taken. It's even blunted the trocar before and I've resharpened that, and the blades and it's good as new. Far as Toxic's the kill potential is good but it doesn't take much reading to hear about penetration issues. Even that Moose video just shows penetration issues. At that range a Slick Trick, Wac'em, VPA (my choice for elk) would be at least hanging out the other side. Check them on every forum and half the people who have shot them have had penetration issues.
Don't know if you've tried them yet or not but I have. They flew terrible for me but I've had others say they were great. The Cyclone's flew good for my dad with his No-Cam but not for me either. 6 blades is a lot of cutting area but as others have said, 6 blades is a lot of surface area also. More resistance when all of them are cutting. If you have the $35, can't hurt to try them out but I wouldn't get your hopes up. 3 straight blades work much better for me.