Thought about replacing it last season, but it really didn't look worn, cleaned it up and stuck it back in. I do confess it is the ultimate in simplicity and rugged design. Cast aluminum deck (much thicker than stamped), push propel (no shwanky self propulsion system to worry about), cast iron block. Even has zerk fitting on all of the wheel bushings. I converted it to a mulching mower - pop riveted some sheet metal over the rear grass shoot. With no heavy bag to lug around, no worries about needing self propulsion, and with nicely greased wheels you can almost push it with one finger.
Even has the original blade - just run a metal file over it beginning of every season to keep it sharp.
