Wheel.
I replaced my Futaba 2DR stick transmitter with a Futaba Mega Tech Sport T2PC wheel sometime back in 97 or so when wheel transmitters started to become affordable in the UK. I never looked back! I find wheels far superior in terms of ergonomics, intuitiveness and smoothness.
Currently use a FlySky GT3B which I find pretty good for the money. I don't think it will outlast my T2PC or Kyosho Perfex KT-2, those are ancient now and still going strong
My 4 year old son uses them with his TL01 scaler.