Dollar also has good rates, but you'd have to check what they have going right now for the dates you need. Check Mary's site www.mousesavers.com up until your trip time for codes to use. Good luck!
It doesn't hurt to make reservations with more than one rental car company and keep checking the rates until you leave. I've been very surprised how much the rates have dropped for our November trip after I first booked my rental car in August.
Be careful about all the hidden fees - such as taxes and extra charges for more than one driver.