For £80 you can get a spectrum dx6i:
http://www.f1hobbies.com/shop.php?id=6990&level

I say these are pretty much the best radio set people use (some will use slightly better sets but very few). These are high quality and used by feather weights and most heavyweights. Have lots of different settings and unlike some of the cheaper transmitters won't get 'drowned out' when there are lots of other radios around.