Most tree guys around here rent or sub out, and want to do the entire grind, haul away grindings and topsoil fill. Most have to wait for schedules to get a grinding done, they try to get 4 or 5 in an area to make it worth their time. I like the 15 minute, leave a mess and HO happier than a pig in slop not tripping over the stump anymore jobs, a good pay for me, usually leads to another stump or tree job, and I get to check up on my parents and get some errands run. Works good for me.