I want to buy a home and approached two different real estate agents. One was very informative, handed us brochures, especially on the real estate law and the responsibility of the agent. The other was very informal, made a lot of gestures, and presented nothing in writing.
Agents are all different in their style and how they deal with people. Some are formal and some are informal. That doesn't necessarily have anything to do with their knowledge and ability. Go with who you like and who you trust.