I retired two years ago and started my solo lawn service. I currently have 42 customers. I use a 32" Yazoo/Kees w.b. and a Honda 21. 24 of my customers have fenced yards thus the small units. My other 18 customers have open yards that take 17 hours to mow. How much time would I save with a 48" w.b. or a 48" ztr. I have placed bids on some larger contracts that would help cover the cost of a biger additional mower. Thanks.