All great info. The big difference I see is that we pick up sticks, pine cones, and trash as we mow with the ztr. Obviously that can't be done with a wb. Walking the property first may be a little more detailed. We run a two man crew with a 60" ztr. One mows and one trims. Guys who have switched from that set up to two wbs how much time did it save? Seems the equipment cost would be about the same.