i have lots of nav systems. i have a clarion with a 30gb hdd under the seat in my truck. i love it. having said that....
in the coach i use garmin mobile pc on my laptop.
i am not a fan of having a joint backup camera/nav system. if one goes bad, you have to replace both.
i put in the capability to view my gps over the 32" front tv while driving as well.
just my 2 cents worth.
tom
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