What would you chose? Money isn't a huge issue. Definitely needs to be double din, have navigation, touchscreen, and bluetooth. I have a friend(with money) that wants a badass nav system. It'll be going in a cadillac limo.

 

Honestly, it comes down to personal preference. Where is he leaning? Kenwood, and Pioneer make good Double DIN headunits with Nav. You really can't go wrong. Just make sure he shops around. Used Is better as long as it can be guaranteed to work as it will be half price usually, and you could get something killer for retail half-assed gear.

 

Pioneer all they way i think that youll find the options very appealing.

 

guy is a millionaire so idk if he cares about pricing.

 

Ive had a pioneer avic z3 for 3 or 4 years now...im sure there is something better on the market by now, but at the time it was about the best you could get.