I, too, drive a 2008 and wanted to get the new maps due to some changes in my two major trips a year. I stopped first because of being unsure about the quality of the latest maps but also because one must purchase 2 dvds and one dvd works for OK and another for AR (where I drive through 4 times a year).

In the meantime, I used my iPhone and iPad last summer and found that the free ap called BeatTheTraffic gave more real-time information about traffic than I got from the built-in nav. So what I did most on the last run (Dec) was to place my iPhone withTomTom right in front of the map of the built-in nav where I could still see the column with turns on the factory unity. The TT app demonostrate turns well on interstates and I am still experimenting with which voice to turn on.

BeatTheTraffic now has a lot of ads so I am waiting for either MapQuest or Google maps to do a better job with live traffic on their apps.

I would gladly pay for a merger of these technologies much as I would if one could merge V1 with the Redline. But for now I am also running both the V1 & RL at the same time.