I'm a retired mech and I do 99% of my own maintenance, but I'm slowing down as I'm in my 70s.
If Exmarks are popular in your area, then most likely dealer support is strong for Exmark machines and this is important to many lawn care operators.
When I do a fast and nasty mowing job, it shows regardless of the machine I'm using.
I'm able to take some of the machines that I service out on mowing jobs, so I've been able to compare some machines. I find that the quality of cut depends primarily on operator skill and technique and not on a particular machine.
With my own Scag Tiger Cub, at a any mowing site, I'm able to quickly setup for regular side discharge, mulching with a side plate or collection as I carry the needed items and tools in my cargo trailer.
If there is a possibility of adding a collection system to your future mower, you need to check into machines that are suitable for and function well with a collection system that uses a blower that is powered from the machine. In spring and fall I use the collection system a lot and I also have a front mounted JRCO 46" de-thatcher that I use during cleanup. I have customers that I only do spring and fall cleanup for. With the machine setup this way, I can de-thatch, mow and collect usually in a single pass. I only use the collection system at customers places where I can dispose of the clippings on or near to their properties. Hauling away clippings is very time consuming and expensive for the machine operator and not easy to get paid for this type of service.
My area is strong with Scag operators, and Exmark is close behind. The rest are a mix of many makes all the way down to a $1,200 big box store machine with a 42" deck that barely fits on a 4 by 5 trailer.
My Hustler X-ONE is a 60" rear discharge machine and is used primarily in an old cemetery, this machine is a beast!!!
Mad Mackie in CT:laughing::biggrin::smile: