I'd recommend a Futaba 3VCS set second hand. I bought one with both 40Mhz and Spektrum 2.4Ghz modules/receivers from a very nice guy for about £200. With just the 40Mhz it would have been about half the new price. Seen a few since then for a bit less - you get a top-line Tx for the price of a decent budget Tx. HTH
