hey mate,
like everyone is saying get the best you can afford because if u get a 4 chan it is likely that you will have to upgrade at a later date. that said i have just upgraded from my old 4 chan JR (which was great for training) to a JR PCM 9X V2 system which is IMHO an awesome radio for the money. But just get wat u can afford, you wont regret it down the track i can assure you!

Safe Flying