Bill was very professional with his work.
I inquired over 4 different contractors to fix a crack in the front steps of my condo (due to a tree root), and only Bill responded in a timely manner, had great communication with me, explained what he would do and what parts needed to be fixed (removing the tree, removing and putting the custom railings back on, leveling the concrete, etc.).
He also was the only contractor that had a proper invoice and was overall very professional. Although some of the other contractors I contacted with had a cheaper price, overall, I got a sense that they weren't willing to actually fix the root cause of the problem, but had more of a band-aid short-term fix (such as just fixing half of the concrete or not removing the tree that was causing the problem).
I would highly recommend hiring Bill for any concrete work and would definitely reach out to him again for any future concrete work.