i have used beman mfx shafts, in several models, in both my compound and lb bows. they are a super tough shaft, and ya are getting alot for the money. just be sure u prepare the inside of the shaft for the insert, cleaning and maybe even roughing it up for a good bond. if not, the hit insert will break loose on a hard inpact, possibly damaging the shaft. this is all ovoidable by just glueing em in right. that said, i have not used the grizsticks, but the mfx's are a tremondous shaft.