if l go to the infiniti dealership with an 06 nissan maxima fully loaded, would l have a better chance of getting a g37 that costs around 42 for about 39000.

and how good are the infinitis bose sound sytem?
does is compare to the maximas system?

Go to edmunds.com and find out the going price for a G37 and the trade in for your 06 Maxima and then do the math.

The top of the line G37 will run u about $38,000. The Maxima is a better bet as far as overall practicality & reliability. Are u asking about trading in ur car? Or just being SEEN driving another Nissan & hoping for a deal because of that? The only way u will knock the price down is if u trade the car in. If u want to show up in a fleet of QX56s, u will still pay whatever the salesperson is allowed to offer. You wo not get special treatment for already driving a Nissan. That is not how it works.