I'm with you like 5k to 6k less, would buy private party. It all depends on the deal you get on it and the previous maintenance of the car. I like the fact that by buying the CPO I don't have to worry about anything up until 100k miles. True you can buy the extended warranty elsewhere...choice is yours....
I am happy with the one that I have made so far...best of luck :D
I also us 87 in mine...the RX does not require premium! B) :D
Is the warranty bumper to bumper?