If you are looking to hire Martin and his crew to cut down a tree or a limb of a tree I am sure they can do an OK job. However, please do yourself a favour and stay away from him if you need any kind of landscaping job done other than above.
I will only stick to the main points here. We hired Martin to plant several trees for us. He first of all criticized (extensively) the work of the other contractor who planted several trees and said that they need to be re-planted as they are planted too low and are still in the wire baskets. When two of these trees did not survive the winter we had to dug them out: they were still in wire baskets and planted very low (less than 2 feet).
Then a large sugar maple tree that Martin planted has not made it (a few leaves came out then shrivelled up). After several weeks of trying to contact Martin, he finally picked up the phone. He blamed us for the tree dying (we didn't water it according to him) and said he stopped by and spoke to someone in our house (?) about it. Interestingly, two other trees planted close to the dead one are thriving, the grass there is lush, and we reviewed our cameras: Martin was never here from at least March.
He then told us he will replant the tree (which cost $600--we have the receipt) if the nursery will replace it for him for free. He wanted to charge us $1000 to replace the tree that he planted this fall (9 months ago) which is now dead. His warranty he told us only covers the tree but not the planting.
Of note, when this large tree was brought in for planting last fall, it was left in the wire basket for four days: the crew had to suddenly leave at 3:30 pm before a long weekend. When we asked Martin about it then, he told us that someone will be coming by to water the tree. It never happened as apparently they "were not available". We were unfortunately away that weekend.
So please review the facts above and make the decision for yourself whether you want to deal with Martin and your company.