Harry,
Quite right re the high impedance Rx output. But I believed that the Technology in Hitec digitals was the same as Mpx digital V1 servos since it came from the same designer. I am talking here about the chip and the prgramming, not the engineering. No ali gearboxes in Mpx servos!
Anyway, guess that even if the design was similar, the component choice is down to individual manufacturers.
I am planning to try a couple of the new Hitec digitals with the Karbonite gearbox to see how they perform. I need the higher power for the canard and rudder on my eurosport than I can get with the Profi MC's. (At least thats what I have read, not sure I believe it though. Eurosports are not that quick.
Regards,

John.