ZT 8000 - anyone have feedback??

This past weekend I looked at the zt 8000 zero turn. Pretty nice mower and specs. It has the same hydros as other mowers that cost at least $4000. Not sure about the Kohler Courage engine though. I've got the command in my Toro and its a great engine. I've heard mixed reviews on the Courage.

Any info on this mower would be appreciated. Now that I know how fast my 2 acres of grass grows in non-drought conditions with plenty of rain, I do believe a zt is in my future. Thanks.