Hey Mo,
I have to confess to just getting the Katanaboy, and I've only used it on a couple of logs and smaller yellow cedar timbers. I think it's too rough for cutting to the line. I took a look at the link Will gave, and I think the Big Boy is probably better—comes in a few different TPI choices.
But as I said, the Katanaboy is really nice for crazy angles diagonal to the grain and it cuts pretty straight, to then polish up with a chisel.
--Just took a look, the Katanaboy is 4 TPI, whereas the extra large teeth on the big boy is 5.5
