I don't own a larger walk behind yet and only have a 42" Dixon and a 21" wb. Have some yards with fences and gates are too small for the ZTR. About 60% I have to mow the back with 21" wb Some of the back yards are 4-5000 sqft. That is what slows me down. I'm looking for a 32 or 36" walk behind but probably won't get one unless I can pick up 10-20 more accounts next year. And Like I said I can do 10 in an 8 hour day and I take some breaks and don't push too hard I could do 15 easily if I wanted but choose not to burn myself out.