I bought a used PDA a couple of years ago and then shelled out for TomTom Navigator 6 (direct from TT) only to find that because the PDA wasn't on TT's list of approved devices they wouldn't give any technical support. No advice on activating maps, nothing. They wouldn't even take back the unactivated product, even though it was no use to me!
In the end I managed to get the maps activated, through, um, "alternative" technical information sources. TomTom have had the last of my money, I tried to be an honest customer but they didn't want to help me, so from now on I'll get my maps elsewhere. Sod 'em.
(Not advocating piracy, you understand. Oh no, not me.......
)
I'm not the only one to find TomTom's "support" to be a joke, they are noted for it. They have the attitude of "If you don't like it, go elsewhere", which is fine, but not AFTER they have taken your money.
I have no idea what their stand-alone units are like. I won't be buying one to find out.
Actually I prefer to use paper maps/streetmaps etc, I only use the TomTom when I'm abroad or looking for POI's (campsites, cashpoints etc). I think the widespread use of satnavs is contributing to the general dumbing down of society, some people can't seem to differentiate between their arse and their elbow unless their satnav tells them so. Even then it can be wrong, but they have lost the common sense to see that for themselves. (Jeez, that brings some disturbing images to mind)
I found this site to be good for info on all sorts of satnav units:
http://www.pocketgpsworld.com/