By buying a GP-E2 unit I would be able to geotag my images, and that is an attractive idea particularly for my botanical and wildlife photographs. But (a) the GP-E2 is not quite in the trivial-purchase price bracket, (b) it is not compatibe with flash use in its most tightly-coupled mode, and (c) I already have a very good GPS (Garmin 60CSx, a classic) which I have used for years, and I am mindfuul that a man with one GPS knows exactly where he is, but a man with two GPSs is hopelessly lost! So a bit of web searching turned up a free (GPL) program called Geotag that uses Exiftool (also free) to geotag images using GPX files, the industry-standard track-recording format. I then realised that on many past photographic outings I had carried my GPS, set up to record a GPX file to its microSD card, and that these files had never been wiped. Lo and behold, with very little effort I now have many thousands of photographs geotagged, and all for just the trouble of searching the web. OK, I have to do a bit of post-processing to do the geotagging, but no more than if I were using the GP-E2 in logging mode, and I don't have the bragging rights associated with perching it on top of my 5DIII (bit like fitting a roo-bar to a Chelse tractor, maybe). Oh, and I can't record direction, not that that worries me. In all other respects I am in good shape with my trusty 60CSx without any additional expenditure, and anyone with a GPS that can store and download GPX files (perhaps even the right sort of cellphone) can do likewise.