I had a leaking gas line a few weeks back and I called Mike Diamond. The person I spoke with was very professional. She sent a team out nearly immediately, and said that they could even start that day. I had very high hopes. Until I saw the ""estimate,"" for which I paid $79 dollars. I had called my regular plumber before calling Mike Diamond, and, because he was too busy to do the work himself, he was gracious enough to give me an idea of what the work should have cost so that I didn't get ripped off. He explained that it could be a very easy fix, but if I needed my entire gas line replaced, I should expect to see an estimate of about $2000. Needless to say I was shocked when the Mike Diamond guys didn't bother looking to see if the quick fix was workable, told me that the entire gas line needed to go, and gave me an estimate of almost $10,000 (!!!!!!), which was after a ""discount,"" but before permitting costs. I was so shocked that I muttered an ""are you serious?"" before telling them I would have to call other people before accepting such a ludicrously high ""estimate."" The other plumbers I spoke with all came in around $2000 for the large job, as my plumber had said, and mentioned the possibility of the minor fix. In the end, the problem ended up being minor, and we were able to fix it for $365, exclusive of permitting costs. The only way I would ever recommend these guys is if you had a real emergency that needed to be fixed immediately, and money was no object. But, you can probably find another plumber who will be there just as fast for half the money.
Pros: Prompt response, courteous service
Cons: Ludicrously high pricing