I like my Navi so much, I got my wife an 01 Ody Navi so I could use my own Acura TL Navi back again. Since we have both the Acura and Honda Navi systems, I can say that they are virtually the same systems based on the Alpine GPS. Acura has the Acura branding and Acura dealers and the Honda has the Honda branding and Honda dealers on the maps.
Now $2K is a bit more to pay on top of the premium for the cars, and the resale of Navi systems is only $400 over non-Navi Ody (I checked last month just before we picked up our new Ody which was on backorder). But look at the alternatives, 1) you have to use paper maps, 2) you pay more and get a goose neck smaller screen GPS that is not integrated into the dash and sound system, or 3) you simply drive w/o assistance from the real time map - so you don't know short cuts around traffic jams, etc. I've used the Navi to avoid cul-de-sacs and take side streets around traffic jams and with the Navi continues to work with you until you get to the final destination, you never have to stop to ask for directions.
So its a neat gadget that will save you time and be useful for years to come. Granted, I expect nicer, faster GPS systems in the future, but the Acura/Honda system is relatively easy to use today. I like it better than the BMW GPS and it responds faster.
If you really want to lust, check out the new Acura MDX Navi. It offers a new feature called bread crumbs to allow you to track a trail off road and then trace the route back again. This would be helpful for all those "unmarked" roads not in the database and in all those small cities that aren't in the database as well. For the future, I'd like to see the integrated Trip computer as well. [BMW trip computer will direct the Navi to the nearest gas station automatically]. But for today, the Ody is the only minivan with a Navi. We intent to use it daily as well as on trips around the 48 states.
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2001 Ody EX Navi, GG
2000 Acura TL Navi, Gold, Comptech sway bars, metallic tints