Rans Flyer,
Interestingly (or not!) lol TomTom's Road Network data and CitySelect's are both supplied by Navtech.. In fact it's identical data and 90% of Sat Nav solutions use it!
In terms of the value added to that data (ie Where's the nearest brothel and Kebab shop) I can't comment on the TomTom data, but Garmin's offering is good enough for me at least!