I have a Grasshopper 725 gas with a blade. Have used it both winter and summer pushing snow and dirt here at my place, and since 2001 I have only reversed the blades edge once. I have also replaced the runners on the back side of the blade. In my opinion it kicks some serious butt. I do have 2 snow blowers in case I am unable to do the drive. My wife and daughter can't run the ZTM so if I am sick they use the blowers.
I have had 30 ton of dirt over the years and leveled it out with my mower and blade. Best money I spent but at 62 it is getting a bit rough to change over each season.
Hope this helps.