I work with C&B Plumbing on a number of calls for property management, and they always come through. Owner Rick and his team are professional, well-versed in plumbing, and (most importantly) never have to go back to fix something they messed up on.
I started working with them through HSA home warranty 3 years ago, and they are one of the few vendors (not just plumbers) that I decided to work with outside of the home warranty because their work ethic is solid, and they're trustworthy.