I ordered the BB, They make a super product...I have shot 4 blade "Z" and love them, but I did give the BB a try. They fly good and are easy to get real sharp. Anyway shot a spike from 15 yards, quartering away, when thur the back rib, came out behind the front shoulder, lots of blood, easy to trail. My "Z" have always did the same thing, for 1/3 of the cost and are easier to sharpen and just as strong..plus I like bleeder blades. I'm back shootin' the "Z" took a nice 8 point that ran about 70 yards. YOU DECIDE IF THEY ARE WORTH THE EXTRA MONEY!! I'll stick with my "Z"!!! I shoot a 50#@ 28" longbow and draw 27"!