From there, the deciding factor is usually how the agent prices a home, not how they present themselves. Ask directly how they account for renovations and improvements that public records and online estimates cannot see, since an agent working from paper data alone will underprice a well-maintained or upgraded home.
Ask for recent examples in a neighbourhood similar to yours, including the original asking price versus what the home actually sold for, since a pattern of large price cuts suggests the initial number was guessed rather than researched.
A short conversation before you commit to anything usually reveals more than a review count or a sign on a lawn. Get your hand-reviewed valuation from Joel Dyck.