I bought a 910 in January. I'm a Londoner, but seem set to be spending 3-4 months a year in the US. I've used it a lot in CA, all over the UK and a bit in NY. I haven't taken it to Europe yet, (but Wingnut , vicar of the two parishes British Midland and London & Ireland, will be taking my unit on holiday to France later this month, so he can chip in then)

I bought it because at the time it was the one unit that came pre-loaded with all of N America and Europe. And Guam, but that was less of a deal maker. For all I know, it may still be the only one on the market that does. And 4 months rental of NeverLost would pay for a 910 twice over.

Good points: It is very good as a navigator. It's very fast, and if you deviate from the route it's planned it recalculates very, very quickly indeed. I mean it really is good, much slicker than NeverLost.

The maps are pretty much up to date if you update them off the website. It's been caught out twice so far, but only in the little tiny windy streets in East London. It's impressive.

The maps and direction giving are really clear, better than anything I've ever used. Very easy to follow. I hardly ever misunderstand what she's trying to tell me to do.

Bad points: The POI (points of interest) are rubbish. It doesn't know stores it really should, and, worse, if you tap in say "Barnes & Noble" it doesn't give you the street address, just a distance. So if you want a Barnes and Noble in one area it just say 7.9 miles away, and doesn't say "Burbank" or "Ventura Blvd". Most annoying.

London has two Ikeas (there maybe three now, I'm not sure). One in the North, one in the south, in Croydon. I live maybe 6 miles from that one. Plug in Ikea and it gives you two, one in Holland, one in Poland. Not helpful.

LA: Movie theatres. 65 of them. Just not the Arclight. The big cinema in Hollywood where everyone goes. Annoying.

It doesn't like synching with a Mac running 10.4. There's funny business with the USB drivers. You need to connect it through an unpowered USB 1.0 hub. Tedious. Oddly, it will do a set-up fine, just not a synch.

I bought it because it's the only one that ticked the boxes I needed. I'm happy with it in the main, but after the really very good POIs on NeverLost, the 910 is a let down.

But from reading other reviews of other machines, here and elsewhere, all of them seem to have drawbacks and advantages. No one seems to have put all the good things from all of the makes and put in one box, though I'm sure someone will be along in a minute to correct me on that.