I have had a comercial grade one for the past 7 years. Mine has a water cooled kaw motor, twin pumps and motors, shocks, and a lumbar seat. Very comfortable.. It's a hefty built machine for a mid priced mower. More like a zero turn brush hog. They have made improvements over the years. I am not so impressed with the homeowner models though.
When ever I have had any issues the tech support guys at BadBoy had me covered
with replace parts most of the time at no charge.