I have been looking at the version of the TomTom's that are out but i don't know what one i should get. I have been looking at the TomTom GO 920T just because that one seems like a good one. I mean that is the difference between the 920T and the 920 can someone please tell me? I know that the TomTom GO 920 T comes with the RDS TMC Traffic Receiver? The other question I have is what does that do? So what one would be better?