alpine navigation
 

i have a d900 with a nve-n871a the map is older and i was told that i can get the 872 disc .
my question is am i better to sell this unit and buy a portable blackbird from alpine.
wich one will have more info for canada. i drove with it yesterday and it showed me pembroke and ottawa but no town in between just want to know if i would get more accurate out of a portable or the 872 software. thanks for your help