best transmitter for a 6 year old?

[jim76]

I'm trying to get an old madrat rolling for my son to use (he will be 6 in a few weeks).
I just wondered what the best transmitter would be for his little hands? Anyone else have any recommendations from when their kids started driving? I currently have a Core Code which is probably one of the smaller stick ones around, but it still may be a little big for him.

Not having used a wheel before (god knows how people can get a car round the track with those horrible things!) i'm not really sure of the different models and sizes etc.

any recommendations gladly received.
ta