[Rick 427 Cobra]

Most important thing is to examine the previous work of whoever you hire. Lots of people say they do concrete. Concrete is no place for the not so good. There are no " do overs" in concrete. An experianced, fully manned crew, ready to go is essential to a "baby butt smooth" job.
I prefer saw cuts for expansion joints because they do not collect crud or interfere with engine hoists and the like.