Winterhawk,
My response is based on that I'm shooting a Stewart 3-pc. 64" - 49 lb. longbow, which shoots tight groups, is quiet and quick. I had a 66" 1-pc. 48 lb. longbow (my son is shooting it now), which shot great for me (very smooth, quick, and quiet). I would consider either of these bows equal on a 3D course or for hunting. Shooting indoors at targets, the 3-pc. shot tighter groups for me. I think that you'll find the 64" will work well for you. I ordered a 62" 1-pc. from Leon in September at Forksville, PA. Can't wait to get it. Leon is a super guy to deal with. Best of luck with your decision.