JMO, but there really is not much need for a salesman anymore. Do the basic research online. Get your possibles down to a short list. Have a good idea of the specs of those possibles. Go looking at them. Only them. Don't be dragged into what the salesman has on the lot & wants to sell you. See how knowledgeable the salesman is. Ask some questions you already know the answers to.
High pressure selling turns me off. Even when just browsing they tend to leave me alone. Maybe it is the habit of getting on the ground & looking at the frame & spring hanger area before opening any door that keeps them away.