Some car rental tips that might help some of you:
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ALWAYS try to find some sort of discount. They often will give some slightly discounted rate for all sorts of affiliations such as student/staff/alumni of certain universities, work for certain employers, belong to a number of Unions or other memeberships, military service, or any other thing they come up with. The discount is usually not that great but always helpful. You usually have to ask about them as they are not offered by the rental company itself. If you get a friendly agent, they may start asking you if you are (from their list) once you ask them. Sometimes using certain credit cards will do the trick.
If you ever travel to another location via air or train and/or rent a hotel, try that too as that sometimes qualifies.
Though I don't know the going rates anymore, I've found Enterprise to be the one with most of the better rates. Also, they will pick you up and drop you off for no extra charge. Check around though because different markets will be different.