If you're planning to keep 3 - 7 years,
get one with nav. It'll be very functional.
If you're planning to keep 10+ years,
get one without nav since your nav is gonna be
so outdates/old school look like car phones back in the days.
__________________
PAST: F80 M3 ZCP | 911.1 C2S | F10 M5 ZCP | E70 X5M | E90 M3 | E46 M3 | E36 M3
|