Originally Posted by Mt Tam I am

How is the Z06 through the twisties vs the 370, in your opinion?

I only use my NAV for the music box function. The delta for your new Z without NAV plus $3500 fee is close to $5,000. No way on earth is the NAV worth that kind of money. Get one without and buy a used or aftermarket NAV.

$5K+ is quite a bit towards your property note.