My 2¢, get a busse. Built like a tank. Designed with chopping in mind. Comes with a "you break it, we replace it" policy. I have a basic busse 7". It has handled all I dished out to it.
-Bill Liptak
I have to second this. Since you stated that you are looking for a large blade, Busse's are pretty much tops on my list. But they are spendy.
The CS Trailmaster has served me well also, if you don't want to spend as much.