We've used the Garmin RV for four years and about 30k miles or more. Cross country twice, once into Canada and around New England and a bunch of 'small' trips. Only one time have I not listened to it when it tried taking me down a lane and a half wide country road as a short cut and I refused. After about a hundred yards it corrected itself. This was with the correct profile selected as well.
That's the one thing you've got to be on top of is making certain you've either RV or Auto selected at the right time. Otherwise it's been great.
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