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For road duties only, I'd like to follow pre-determined courses
Cheers for your thoughts
Andy
If you are pre-planning the course, then uploading it to the 510 and following the 'breadcrumb' trail... then yes, it works really well. It will even give you turn-by-turn style navigation, although it doesn't always get this quite right (thinks 90deg bends are junctions etc!).
I use mine all the time to both track my routes and follow routes I've planned either in Garmin Connect for road riding or Tracklogs for off road and I've never felt the need for full blown mapping.
Cheers,
Paul
Used the breadcrumb view on the 500 quite a lot and compared to the 810 map view it's rubbish. Having it overlaid on a proper map for me is so much better. Screen on the 510 I think is better than the 500 so it may be a better experience but no regrets getting the 810 over the 510 here.
If it's got the same glitch that the 500 has where it randomly stops displaying the breadcrumb trail, then displays it for a minute, then hides it again I'd say it's not worth it...
I've used mine to follow a breadcrumb trail a few times, and the turn-by-turn directions only once. It works really well - the caveat being that if you lose your way and get off the track, then it won't/can't redirect you back onto the course in a sensible way. It'll just point an arrow in the vague direction but won't take into account which roads will get you there.
I'm happy with my 510 but if I was doing a lot of navigating on roads then it's probably worth spending the extra on an 810. Unless you can get an older 800 somewhere to split the difference.