Hi I am looking to buy a new portable satnav for my bus, I've been a fan of Tomtom's for years. I bought a new tomtom last year with the new interface and wasn't keen, even less so when the gps reciever couldn't lock onto a signal. This was returned. Does anyone know if the new versions are any better? Or do I look else where. It needs to have a decent sized screen and cover Europe. Thanks, J.