Paul
I admire a man who understands "reasonable force".
Despite anything that certain celebrities who occasionally honour this forum with their presence might believe, I'm of the firm conviction that if you buy the most expensive then you may find you don't get everything that you wanted – but if you buy the cheapest then you usually get everything you deserve.
Do make sure you research the Spektrum receivers thoroughly before you commit the Thomason family jewels. Such things as DSM's, DSM2's and DSMx's – or whatever- weren't intended for old farts like us to decipher easily. That aside, it's still a vast improvement on 27Mhz Super-Regen carrier-wave sets.
Kevin
Ref last sentence – don't worry your pretty little head about such things. There be dragons.
DM