To give you a perspective, I use a recurve, 55# @ 28". I use Carbon Express Heritage 250 arrows cut to 29". I use a 50gr. insert, a 125gr. point, and i add a carbon collar. All together its about 585gr.....A lil 550 cord inside adds up to about 600gr.
I have used CX and Griz sticks, and I've never had any problems. Nor have I ever heard of anyone complaining about them. I tried some GT 55/75 set up the same way, and when the insert would not come out, I had problems with the nocks. After a couple of hits into things I didn't intend on hitting, the back of the arrow would splinter. I'd go with the griz sticks. Expensive, but I think they'll last longer!!?