Scag Pro-V...Fail! Scags new walkbehind without the velocity deck ....Fail!! And I love Scag.
As far as standers go IMO have their niche just like Walkers. When I tested a stander it was extremely efficient up to a 1/4 acre to almost 1/2 acre. If all my properties were that size all I would run are standers. They are way faster than a walkbehind(9 mph on the one I tested). After 1/2 acre a ZTR was more efficient.