jase1125 wrote:The problem is the handheld units hold more data as it is stored on a hard drive. The infiniti Nav system is on a dual layer DVD so it maxes out a little over 8GB.
I completely disagree with your statement and it is just plainly incorrect.
First, Nissan (Zenrin) could easily put in a mass storage harddrive for the in dash units, but they do not and instead provide a direct link to a DVD drive (which is probably one of the reasons for higher cost - it is like having your own computer in the car).
The direct link allows you to use updated DVD maps easily.
My Garmin Ique handheld unit only holds 288mb of info. I could only upload a few states at a time. I upload it from a DVD through my home computer which seems to hold all of North America Maps with no problem.
In addition, there is no reason to be limited to one dvd. If all of the maps cannot fit on one dvd, put one half of the country on one, the other half on another.
Finally, and what I think makes your statement flat out incorrect, is that one of Garmins best portable units, the 2720 only has a 2gb hardrive which is able to hold all of North America AND Canada. So, I think a DVD with 8gb, almost four times the space of this hard drive is enough space.
(see this link at end of review -
http://www.gpsnews.org/gps-sys...eview/)
So the lack of space is clearly not the resaon for Zenrin's inferior maps.