This is my first year in business and I do it part time. I have 10 accounts, 5 of the 10 require me to use my largest mower which is a 52" bobcat walk behind.(older model late 90's) I also have a 36" and 32" exmark w/b. These larger accounts take me 1 1/2 - 2 hours to cut. There are a lot of large properties in my area so the possibility of me getting more large accounts is good. I was thinking of purchasing a ride on mower w/ a vac system. What type of mower do you recommend?