I had a back yard worth of branches that needed chipping, after I pruned a bunch of trees myself. It was a pile of about 1800 cu ft worth of branches stacked loosely. A Bartlett employee came to give me a quote for it. He was very pleasant and did not pressure me at all (ie, he did not come with his chipper ready to go, wanting me to let him do it right away, or something like that).
I later decided to go with Bartlett and they came a few days later to chip the branches. They removed every single branch and twig, cleaned the yard very well, and afterwards it didn't even look like any branches had been in the yard. The clean-up job was amazing.
Although this was a very simple job, I will most likely use them for future tree work, big or small.