I have a TomTom Go 600 - and it will be replaced by another TomTom. Some cautions though:
1) Make sure the traffic feature is all built in - some of the cheaper models need a smart phone connected via bluetooth which is clunky.
2) Garmin offer a model with a built in dash cam - avoid this like the plague - the processor in any satnav is marginal at best and the extra function is several steps too many for the built in processor
3) Make sure you get one with a memory slot for additional memory - TomTom Europe is beyond the capacity of the built in memory on our device. The newer up range ones have 16Gb built in which is just enough but the maps keep getting bigger - hence the need for extra memory
4) The devices that upgrade over WiFi are easier to use - the only real problem we have had with our TomTom was when I changed my computer and the new machine had a default fire-wall setting which messed up the upgrade on the TomTom. The support desk was very helpful built it was a pain to have the problem in the first place.
Good luck.
