Little out of topic, but here is what I think. I believe that TomTom XL core is not cracked yet (ask in TomTom group for sure) Personally I'm not a fan of TomTom, but I do have TomTom One used for testing my hacks/tools for TomTom. Generally, outside Europe, HERE maps are better than TomTom.
Get an android device, you can use TomTom, NNG, Sygic and Garmin proggy on it. This is most flexible route.