Tx for a 10 year old with small hands

[pumbaa]

I'm after a tx for my 10 year old, who happens to have smaller hands than a typical child.

I've tried him with my Futaba 4GRS and my old KO Esprit, but even with the stick length reduced, he can't hold either comfortably.

So, I'm looking for practical recommendations for a suitable Tx, which I begrudgingly accept might need to be a wheel.

Thanks