Just pondering whether to get one of these for my son's 3rd birthday...Anyone already got one and got an opinion?

I had a play with one last week and think it looks great, but my child is only a 15 month old toddler who loves "Dor, Dor" and the laptop is too old for her at the mo.
If it is still available when she is about 1 year older then I'll buy it for her.