One Garmin 2720, one Tomtom Rider 1, one Tomtom Rider II and a Ipaq that came with Tomtom navigator.
The Garmin is great and I use it all the time, Rider is OK and I only finished up with two when Tomtom gave me the Rider II as an apology for really crap service when the Rider I failed (they eventually replaced that as well). The Ipaq is OK now it's running Garmin software.
My conclusion is both Tomtom and Garmin get you from A to B. Garmin is vastly superior when you want routes with waypoints and I find the software much more intuitive. Tomtom have nothing to match the excellent Mapsource PC software. My experience is Tomtom service - 8 weeks, Garmin service - 3 days, and that seems to be reflected in many other posts.
To be fair to Tomtom they did eventually give me an expensive free gift as an apology but I would rather have had my Rider fixed quickly and without hassle and had to go "to the top" to get it sorted. One phone call got the Garmin replaced free in three days when I told them that the failure was my fault and I was happy to pay.
One advantage with Tomtom is a much bigger range of downloadable POI files - but I can live without knowing the location of every B&Q, Iceland and Morrisons, etc. The installed Garmin POIs cover everything I need when travelling.
If I was buying again tomorrow I would only consider Garmin.
