Gents, many thanks for you replies - as always its appreciated.
So obviously I will hold off buying anything over here and wait until I get back to the UK.
Now another possibly naive question - are the main stream systems compatable. Basically, can a buy a Futaba servo and plug it into anoher manufactures receiver?? Are the plugs/connections compatable? For the last boat I rigged I bought a "package" of radio/reciever and two servos but that was more years ago I care to remember.
Obviously wihile I am over in the US, I have the option to buy the high torque servo from the local shop, which happens to be a Futaba dealer. When I priced them up back home they seemed to be coming in at around 60-75quid.
Essex2visuvesi - thanks for the advice about failsafe, while certainly invest in a couple (one for my other boat as well)