I didn't see the best feature (I think,) of the Garmin 760RV mentioned and that is the fact I can hook up the backup and side cameras to the GPS and have a bigger and better positioned monitor for my cameras.
That and the GARMIN has backup lines (like my car) to help judge how far you are from whatever you don't want to hit.
Oh yeah, and it also ordered a decent job of routing trips.
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