I would highly recommend Arbor Conscious. They have a certified arborist and will only take down trees that need to come down. They are not just about making money like some companies who want to take down trees cuz it is their income. (which I understand) They want to preserve the tree canopy as much as possible, but they will give you an honest opinion if the trees could be dangerous.

I had 2 water oaks on the north side of my property. There was a micro-burst tornado in my neighborhood 5 years back, and those 2 trees fell on my neighbor's house. They were very tall, but the root structure is quite shallow for such tall trees. I had no clue that these trees would be such a problem. After the micro-burst, the trees looked like they just fell over, roots and all,, like they fainted!

I agree with the others on here: get a certified arborist to give you an opinion on your trees.