I recently had a family member use another tree service in town, and they had a very negative experience. I recommended a company that I have used a couple of times within the last few years - Tree Masters. Although their prices were a little high, I did receive very high quality in service. For me it was far more important to have my valuable trees taken care of by certified arborists than to go with the lowest bidder. Overall a very good experience.
Pros: Certified arborists, Insured, Detailed, On-Time, Not too aggressive in removing green from my trees
Cons: Prices are a little high compared to some of the other bids I've received