@billlamp,
Actually, for medical insurance - I don't. It has been so long since I have been in the market and in todays world it is so dog eat dog. I remember in the past one could just talk to the agents and compare what each of them says. But, I don't know if today they can be trusted. Do you have a human relations department at work? They can give good advice.
Also, you doctor could help or tell you where to go - hopefully.