I'd strongly the mapping etrexes over the gekos - the lack of a map is something I sorely missed before I got my Yellow Lovely.
As for maps, well, there's OSM (download in my sig) for free, routable, topo maps of the UK and Ireland and cloudmade.com or openstreetmap.org for the rest of the world.
Or bittorrent, but that would be naughty.