Garmin Zumo 550 or TomTom Rider V2 Europe?

[Stig]

Hi all,

The question's in the title really. I'm after a decent sat nav to replace the TomTom mobile in my phone.

I'd like to use it in both the car and on the bike (so +1 to Zumo for inclusive car mount on this score at least but like the familiar TomTom interface.

Any opinions?