It's 4 bladed and works very good. It'll take down a 7 inch diameter tree quick....of course then you have a 7 inch diameter tree on the ground and processing it takes some time with a rotary. Very good for "it just needs to be down". I broke my motor in half two times (warrantied both times)since then they have come out with a fix for that and no trouble with it since. It's a good brush mower, a Bradco will cut grass better with it's longer blades. It's always a trade off.
It may suffer with the flow of the TL150, it really needs a high flow machine to get it done.
It was just over 8k when I got mine.
I have a Davco and i raise the loader as high as it will go and start chipping the tree on the way down, that way you don`t have a whole tree on the ground