I left messages with several plumbing services, and got only a few responses from those, and Colin's was by far the most comprehensive and explanatory quote, never mind price wise. He was very good about explaining what the problem with the main sewer line was and how their process worked.
Our line had collapsed and silt/sand was coming back up the floor drain, and I was getting worried about it, but Colin assured me that it would still be ok for the week between my first meeting with him and the job date.
When the day came, he showed up on time, and the whole process was very clean, and everyone involved, very professional and polite. I popped out every now and then to check out what they were doing (not to monitor, but just out of curiosity) and Colin was still just as pleasant explaining what was happening.
It was very refreshing to see the owner being right in the pit with his workers and not supervising from a distance. I could tell he really enjoyed his work and even providing guidance to his apprentices.
I would not wish my sewer problems on anyone, but if anyone asked me for a recommendation on a company to do the replacement, I would not hesitate for a moment to recommend Colin.