Futaba FF9 Servo upgrades from S3001's
 

I am about to purchase a UCANDO 46 with a 4 stroke OS70 Surpass MkII engine but am currently a little worried about what transmitter/servos to use.

The Futaba Force Field 9 comes with S3001 servos. I would like to upgrade them to digital servos. Can someone make a recommendation for me please.

I also spoke to someone who said he would always prefer JR over Futaba and pay the extra for it but couldn't tell me why. Would anyone else advise on the JR system or just stick with the Futaba FF9 with servo upgrades?

Please help.