We found Arbor-X after moving to Bel Air in 2002 and chose them after interviewing several tree services, noting that David is a Maryland Tree Expert. We had the owner, David Driver, help us take care of several trees that needed trimmed. When a 200 year-old American Beech fell on our house and put a hole in our roof during a torrential downpour, we called Arbor-X immediately. David was on our roof clearing branches and covering the hole with a tarp within 30 minutes - during a thunderstorm! Arbor-X returned and removed the huge tree and all debris from our property in one day. At our new home, David gave us a free assessment of the trees on our property, identified three that had severe rot, gave us fair price, and removed them in one day. David is a Maryland Tree Expert and an ISA Certified Arborist. We always feel like he gives us an accurate assessment and does not recommend unneeded work. We highly recommend Arbor-X!