bump have a 500 bought it as came bundled with OSM here in Aus’ and the navigation works very well on shared trails and gravel roads – have used at local trail centre and seems fine but not very complex – you can set up different profiles that look at and use different types of trail – downsides for me are variable battery life, it can be hard to upload gpx files to the unit – never seems to work using USB cable sometimes ok over wifi – probably different in UK but magellan support here is poor and known problems (like demanding to reboot) seem to take a few months to fix if at all and the odd firmware update seems more problematic than helpful (in my experience) add in less users/regional issues and it can be hard to find a solution to a problem on a forum somewhere
would I buy another – no
edit lengthy discussion here but believe support in europe may be a bit better http://www.bicycles.net.au/forums/viewtopic.php?f=34&t=74555
