I called Jesse of Black Bear Tree Service after waiting for more than a month for the first company I had contacted. Jesse immediately set a time to come give an estimate, and kept it. He explained where his quote came from, and it seemed very reasonable, given that doing the job myself would have taken weeks and great expense. When a piece of equipment failed, he used his contacts to borrow a replacement so that he could finish the job. I'm sure that cost him extra, but he never passed that expense on to me. I'll be calling him back next year.