Oh dear, top of the list at the moment is the Jamara 2.4Ghz 4 channel radio set. Why?
Well because it will cost you £64.95 and it's actually a very cheap, plastic Art-Tech radio which is made in China and then badged with a Jamara sticker.
Also it won't bind with anything but it's own specific receiver and that costs £34.95.
There is deffinately better out there and it needn't cost you any more, in fact I went out and bought a Spektrum 5 channel because this Jamara is so poor.
I'm so glad I didn't buy one of there gliders to go with the radio.
If you want a cheap 2.4 set then try either of the links below. I think you will find they are also not brilliant, but much better value.