I've tested Ed's Griz STick designs through various evoluationary designs.
I think they are some of the toughest sticks out there. They, like most carbons, take a bit of tinkering to get tuned just right, but using OL Adcock's website outline on bareshaft "planning" method of tuning, it took just a short while.
The current woven carbon cloth is amazing. I've torture tested them and they are quite tough.
They are pricey, but they were designed for the toughest game, great penetration and weight without having to add extra weight. If they fit your need, they will perform!!!
I've shot them out of Morrisons @48 to 54# and other bows cut well past center on the risers. On some longbows with AMO 1/8" shy of center cut, they tend to need more front weight.
Good luck.