[Hucky]

I have an additional Alpine Mobile GPS unit the latest version for my car and the Factory H2 GPS is far superior and is far more accurate.

Example:
In my 911 if Im listening to music I cant hear the navigation
In my H2 I can

The Alpine doesnt adjust itself automatically for day and night
The H2 does

The Alpine isnt Onstar Compatible
The H2 is.

This list is long, but the Factory Blows the aftermarket Nav away

Plus, its easier to steal the portable for some butt bandit than it is the Factory Navigation.