I spent yesterday mowing with the new John Deere 997 with the 31hp diesel. AWESOME. The speed and power was right where it needed to be and a very smooth ride. I ran wide open in 10" - 11" rye grass with a 72" deck at full speed and did even phase it. The touch on the controls are perfect too. If anyone has the opportunity in the next few weeks to test drive one of these by all means do so. It is a big Z but wow! Most people here will not need something like this but..... what a machine.