In TOMTOM I refer only to the few days that this device functioned until it was made "inoperable" in repairing the house TOMTOM (see reviews TOMTOM GO730 1stern).
The map display is colorful when TomTom and there are more information on the card. The presentation of the Navigon is simple, but all the important information is easy to read.
Very good at Navigon, the track or route can be displayed as a map, so that you the current location easily captured within the track.
Sound output I would decide in favor of Navigon. The hands-free function is either not the strength, but also here point for Navigon.
Both devices have an integrated transmitter, whether useful or not ?? When Navigon there are looking for "free frequency" function, very good thing, since it is very laborious manual search via the radio. When TOMTOM I have this function not found.
Car mount: the TOMTOM the cheapest mount I've ever seen, but the device is not energized, and then plug another 2 cable and ..... finished. When Navigon, it is not only the design, which is also adequate for the price, even the simple one-click and you're done. Insert No cable, all integrated in the holder.
I want to make the TOMTOM device is not bad, the settings are here almost unlimited (screen layout etc.), the voice input is integrated into the entire address entry and work. When Navigon should replace this function by the simple input with the keyboard.
The display of motorway exits as images etc. in TomTom Advanced Lane Guidance with Reality View Pro Navigon are equivalent.
Lane assist with Navigon (there is a display on the map the optimal track) has in Hamburg and in Berlin works just fine.
Both units were from the system stable and are not even crashed. When Navigon SD card must (where the entire program is) are equal replaced by a larger, I have a 16GB SDHC card is inserted (but 4GB is enough), otherwise the first update can not be realized.
Who has a salvation TOMTOM so determined well served, from today's perspective, I would but I opt for the Navigon because it is the better device to use and guide for me. For all of you who have a TOMTOM: "May there always be curative".