Street Navigation
Off road navigation
and combined units
i personally own a Garmin Nuvi 500 which is a car based rechargeable unit, comes std with turn by turn navigation, and also OFF road mode capabilities, complimented with availability of Topo maps,
after much research have found it to be a good alrounder and highly recomended for all uses
![Smile :)](./images/smilies/icon_smile.gif)
im familiar with a variety of units as i do sell them, so im happy to be as helpful as i can and steer you in the direction of suitable units for your needs and where u can get them