I had the original TomTom Rider and now the Rider 550 (both motorcycle specific). Over the number of years working with these two units I've never had the "Insufficient Memory" issue when loading Lifetime Map updates.That is exactly what TomTom did to me. I bought a unit with "lifetime maps and traffic." Thing took 2 hours to update by cable, even new, b/c it has like 2mB of RAM and the updates were 1.9 or close. Finally the day came they informed me there was insufficient memory. Like you and Garmin, I was/am a bit jaded about TomTom. I think the only conclusion is all the makers do that as their own special way of planned obsolescence.
I have both TomTom and Garmin in the cars and think the TomTom interface is superior. Their price point for the MC unit is definitely more attractive than the Garmin unit. So like the previous post, I'd also like to hear how it's going with the new TomTom unit.
The TomTom Automotive units are generally much less expensive. Are you referring to the Automotive units giving you "Insufficient Memory" issues?