1. ready to go- i.e. don't need to buy maps BFEFORE it will work first time 2. reasonably priced map up dates 3. no blue tooth, dvd, calculator, phone or other do dads 4. the biggest screen- should have been top of the list 5. reasonable warranty 6 portable - can use when walking 7. best proce i could get.
Yeh i am looking to use it off road mainly. i was impressed with my friends VMS. The tracks it was showing up on the cape was amazing, but a sales person told me to be wary as they have had a lot of trouble with them