For the past few months I've used
www.travelnow.com ,if you're a member of MYPT you getb to them by the "shop and earn"post, then click the travel section and once again you click up on top where you'll see the TN logo. I just booked for the next 5 rentals couldn't find a cheaper place that you don't need to be a member of, and I saved literally over $50 per week than going with the rental company's site. Whats great is it gives you a full listing of many of the companies that serve that location eg. booked w/Montgomery-ward for LA I understand that its Budget yet the price was $60 cheaper for the week than Budget for the same car and yet I'll be driving out of Budgets lot.