Ive used Futaba and KO over the years but always felt the Futaba stuff had a better quality feel to it.
Lots of people run Spektrum and Futaba's 2.4ghz module in the 3vc
Iv heard and seen more problems with the spectrum system than the futaba one, but the Futaba one is more expensive to buy if you have a 40mhz 3vc and want to upgrade to 2.4ghz!
There are lots of people who don't have any problems at all with both systems which ever way you go you will have a very good Tx
