Try www.hotwire.com for a rental car. For an upcoming trip to LA they were about $50/week cheaper than anyone else I tried - even Priceline. I got a mid-size for $136.28 including all fees and taxes and the good thing is that you know before you agree to buy exactly how much the rental will be, including fees and taxes.
They also have airline flights and hotels but, in my experience, Priceline is better for these two.
They also have airline flights and hotels but, in my experience, Priceline is better for these two.