purchase the c330 , and it arrive the day before we trip to so . Florida to visit the grandkid . it only get lose once in Alabama on SR-76 , but I believe that problem have be correct in the software upgrade that be free from the Garmin site . the product be better than I think , and be perfect . visibility be just fine in bright daylight , and it be a Godsend at night . every little twist in the road appear on the screen . it switch automatically to nighttime mode , and back to day operation . Worth every penny !