I actually dont have a ride on. Have been close to buying one but not just yet, no real need.
Slasher is $80 for 4 hours hire vs Ride on is $150.
I hire a billy goat a few times a year. Really easy to use but it does push grass down so you may need to go over the thicker stuff 2 or 3 times. Tip is to let it do the work and take sweeping turns.
Whatever you do walk the whole job first and remove anything. A stray brick will ruin your week...
I have a JD lawn tractor but I use it for home use (it came with the house) and only use it occasionally for work. It surprising the amount of work they can do if you take it slow.