In order to make your decision about the model that is right for you, you'll need to test drive some cars. However, keep in mind that this is only a test drive. You're going to walk in, drive the car, and walk out again. Be firm with yourself: under no circumstances will you be buying a car today. Consider your test drive a research mission, and refuse to talk price with the salesperson.
During the test drive, make sure all the power components work like windshield wipers, radio or entertainment system knobs, door locks, and horn. Once you've parked the car, take a good look at the tires, exterior lights, body, and underneath the car. Ask the salesperson or seller as many questions as you can about the car during and after the test drive.