Blair Wind
The Iron Avenger
Plus, his throwing range is greater than the others. I mean, sure all of them can throw their weapons, but his would have the highest accuracy (three parts to "catch" with, and they are meant to be thrown if need be), and most Sai users when throwing aim for close quarters throwing to the feet. (Its also why most users carry three sai's, in case they decide to throw one)
Plus any attack that he actually lands with the long shaft (which is a little longer than the distance from your hand to the elbow), can just be followed through with a push to stab with the outer shafts.
The Sai's, while not looking like much, are great for their defensive abilities that lead to offensive attacks, and are not inferior to the others.
Just saying. I mean I like the Bo Staff (my favorite probably, especially since I actually have a 6ft one from my time in Karate), but you cant downplay the other weapons. 😬