As i know latest TomTom not "hacked" at all, but with Europe maps (45 coutry) it's not a problem: on both devices you will get lifetime map updates. Other maps for TomTom only for money.
Big difference with trafic delivery (except RDS-TMC via radio): garmin via smartphone (like 600 Tomtom), but 6000 via internal SIM-card (without rouming cost in EU country).