Summary: I bought my Navman ICN 510 in 2005. 3 months ago I decided to upgrade the maps, because even for 2005 the maps were old. I bought the software from Navman Australia, because I couldn't find it here in the US. After 3 months of constant calls and e-mails to Navman I still cannot update my new software!!! Unbeliavable! In the mean time I bought a Garmin 250. I didn't buy it in 2005 because I didn't know that Garmin was the best brand.
Summary: I've had one of these for a little over 2 years. Slow start up, crash prone, outdated maps even when new. Frequently locks up and requires reset and re-entry of route coordinates. Buttons difficult to use-multi-function button extremely sensitive and tough to control. Many better choices on the market.
Summary: I've had this for about a year, and I'm fed up enough that I plan to purchase a new device. Some of the problems I've experienced: -Completely useless for any kind of road trip, greater than maybe 100 miles. It sends you one way, recalculates, changes its mind and then tells you to go back the way you came, recalculates again and tells you to go the first way again. -Absolutely refuses all toll roads, even if you don't have "avoid toll roads" selected.
Summary: I bought this unit for a drive from the Chicago suburbs to Fort Meyers Florida. I found that the the GPS worked fine on this unit, at least while the auto-rerouting was disabled. If you turn on auto-rerouting, that software has multiple problems. When the unit goes into auto-rerouting, the unit quits displaying your current location, ie., the screen freezes. Fairly often during the auto-rerouting, software crashes. To recover from the crash, you have to reset the unit.
Summary: Remeber this.... THis company is run by baboons (check previous reviews of their products). Their customer support service is insaine. Once the customer support voicemailbox was full for a week. So no customer could get through. They lie about things they promise in emails. Maps always outadated. GPS position can't hold even on clear days. STAY AWAY FROM NAVMAN!!!
Summary: I bought the Navman icn510 last year. It has a great interface, but it miserably fails in the mapping software department. Garmin uses NavTeq which is considered the benchmark for automotive mapping software. All luxury car makers like BMW and Mercedes use only NavTeq software on their OEM navigation system. I've personally verified this on my BMW M3. On the otherhand Navman uses TeleAtlas, which is not very upto date and it is hard to find addresses.