Don't be obsessed with latest tech. Especially for your RTW.

I'm still using a 600. Yeah it's slow for on the fly adjustments, looking up addresses or checking it's map etc; but it's not really for that.

All navigation aids eg. Sat Nav, paper maps, Google maps etc should be used together. There is no perfect piece of tech that does it all perfectly.

Out of large towns and cities, you don't need to be following a voice in your helmet. How boring and un-interesting.!!!

Your 660 does all you need. It tells you where you are and which road you're on. And it's easy to set your route the evening before if need be if you want to be guided turn by turn.

In a city, the smart phone is king. Google or the plethora of offline maps available on your phone.

In my experience it goes something like this:

In your hotel or campsite, you lay out your paper map and work out your route for the next 1-3 days.

You then set some relevant waypoints into your Garmin that you can save which will keep you on that route.

In the more remote regions of the world, you can just use the routing on your Garmin and it will do just fine 90% of the time. Because there are no other routes.


A lot of people don't use a Sat Nav at all. They just follow a map, signs, compass for their adventure and have a smart phone as a backup when they need to find somewhere specific in a busy area.

__________________
Did some trips.
Rode some bikes.
Fix them for a living.
Can't say anymore.