[newslang]

For a_c_S; I have igo 8 and don't have a problem with the backlight turning off. try this: settings -> device then click on the "power managment" button until it states "Backlight Always On" --- that should do it.

Now back to the thread;
I've used garmin and Igo 8. Garmin has the edge up with POI, traffic, and google search (e.g. checks if your flight is on time). Igo 8 has a nice interface with customized skin (shows street numbers/side of street as you near your destination, shows highway lane information/signs), but the key to Igo 8 is its text to speech (TTS).

Overall I use Igo 8 if driving in a new city where TTS is very helpful, but if i'm in a city I know a bit about i will often use garmin. If i had to choose one I would probably stick with Igo 8 and its TTS- great maps as well