Ben, Im leaning towards going with Lam birch shafts,and elclpise 145 heads. Still not sure onthe heads, only thing I dont like about the eclipse is the slight radius surve to the blade edge. I prefer straight, but otherwise I've read good things about them. I want my arrows around 600-625. I've got some of the Surewoods, I like them but a little lighter than I prefer. If I crank up the head weight to get them where I wan them theyll be underspined. So... I'll hafta tinker a little.