Do It Right Plumbing was prompt and did a good job. There haven't been any problems so far. There were some hidden costs as the cost for the parts were not listed on their website, so that was a little misleading, but that was my only complaint.
I have used them three times so far. The first time, they replaced galvanized pipes of the main line. The second time, they hooked up a freezer line to the refrigerator. The third time, they replaced a leaking line that leads to the outside faucet.
The man who came the first two times in particular was very engaging and personable. The prices were also reasonable.