Metro works great...
For a small business, if you have mostly flat yards, the Ex-Mark Metro works great. I've used one for three years, and they also handle well on slopes. I did purchase a Jungle Jim attachment which helps save on walking so much. The Ex-Marks are built to handle the commercial stress and strain. Although I am thinking of adding the Gravely 36X to my toolbox. It's a smaller rider that's also built to take the abuse.
Dan's Lawn Care
Ford F150 XL Truck 1999
6 x 10 Trailrite Trailer w/ramp
Husqvarna MZT 52 mower
Big Dog C142 mower
Husqvarna HU775H Power Mower w/bagger
RedMax BCZ2401S Trimmer
Husqvarna 570BTS Backpack blower
Husqvarna 445 Chain Saw
Husqvarna 327ES Power Edger
Echo HC-150 gas hedge trimmer
Arien's dual stage 625E snowthrower