The Superstar EP is considered underpowered by most accounts. The DX7 would be a nice radio system, but I'd recommend you look at the Model Tech Fledgling II or Sig Kadet 42 EP instead if you're interested in an electric trainer ARF. The brushed power system on the Superstar EP is inefficient and it results in weak power production and short flying times. Find a brushless setup you like and add the radio of your choice.