I would join ther Insiders Club....free...on their site. Discounted rates. Also...look for coupon codes...I recently used Ad2358fdf...or it could have been ad2359fdf....can't remember.
If you are a BJ's member you can use id code 7014696 with coupon codes. Check out the BJ's website. Costco does the same.
Finally, check out rentalcides. com.
You should be able to get a good rate. I am renting a premium car for ten days...April 12-22 for $191.44...all taxes included.
Hope this helps!
PS Check out the transportation board...lots of Alamo threads with codes there.