We used Custom Quality Tree Care, Matt Krousey. I have two phone numbers, 320-266-8824 and 320-573-2345. He was a couple of thousand dollars below other estimates I received and did a great job. (I have not tried the phone numbers and an internet search was a bit, err, inconclusive.)

If'n it's only volunteer hacking, I gotta electric chainsaw and a sawsall that can do them in quite quickly.