My favorite was Raph. I mean all the other weapons that they had you saw them every day. I had never heard of Sais until I saw the Ninja Turtle movie. I took Tae-Kwon-Do and I wanted to learn how to use the Sais when I got older. He was the trash talker and always had a problem with authority. I just liked him better because he was more entertaining.
From what I understand, Raphael was supposed to be the Wolverine of the group, right down to the claws/sai parallel.
As long as we're keeping up with this X-Men analogy, Leo = Cyclops, Don = Beast, and Mike = Iceman?
PS As of now, the correct Turtle is winning the poll