TomTom Via 130 vs TomTom start 20 - what's the difference???

[TheCarMadDad]

Hi Guys.

Just deciding on a sat nag as some decent deals on atm.

Does anyone know what the difference is between the TomTom Via 130 here:

http://www.argos.co.uk/static/Product/partNumber/1...

And the TomTom Start 20 here:

http://www.argos.co.uk/static/Product/partNumber/1...

They both seem to have the same features but the TomTom start 20 comes with a case included. They are both half price as well.

Or would I be better of going with this Garmin Nuvi 52 for the same price?

http://www.argos.co.uk/static/Product/partNumber/1...