I’ve not managed to update my TomTom in the 3 years I’ve had it, and I’ve worked in IT for 20 years. Then again I dislike Garmin due to their rip-off bike GPS computers so wouldn’t give them my cash either. If you’ve got a decent new smartphone I’d just use that and buy a dedicated mount etc.
Just for balance I have TomTom on my iPhone and it works very well both in the UK and France.
Updates virtually every month via App Store. Haven’t noticed any bugs recently.
Traffic updates work very well too.
i’ve gone with Tomtom for years now, only problem i’ve had with being buggy was after i repeatedly dropped the thing! The new one i got for xmas is superb, intuitive to use, good mapping and good instructions. i think they do an option for lifetime updates of maps now too, but i imagine its not cheap.
Bonus also for me is i can create and upload all of our sites as POI’s which makes planning far easier than hunting down postcodes.
I admit though, the new updating software is a bit poo…