I switched to laminated birch last year (shooting a 55 @ 28" Toleke recurve) and couldn't be happier. I'm shooting 65-70 spine cut to about 28.5" BOP. They are HEAVY and shoot like darts.... can't remember how much they weigh with 145 heads but its heavy and make my bow deadly quiet. I'm about to start experimenting with some of the Safari shafts from Alaska bowhunting but, I will hunt with the lam. birch this year. Some say they are hard to straighten but I haven't found that to be the case. Try them, you might like 'em.