I suggest you check out tvnav.com. Darrell is an RVer and sells Garmin products. Give him a call or email and he will help you figure out just which one is perfect for you. He really is a great fellow and as honest as the day is long.
Ron
PS: I've know him for years from RV forums and never heard a negative comment.
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Ron, Linda & Charlie Dog
2004 Mt Aire 4301
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