I have a .30 Nitro Shuttle Z /ZX that I've had for many years that flew on JR NES-401 servos a few times and then was put away. I want to start flying helis again and want to update my servos to something more appropriate in keeping with current technological advances. I already have a Futaba AVCS GY401 gyro with the S9253 servo that came with it. So next is the rest of the servos? Do I need digitals and metal gears, or is this overkill for a noob? I have a set of JR DS537 but I thought I heard somewhere that they are not suitable for helis? I fly JR FM/PCM gear. Anyone have any recommendations on a good value and bang for the buck on .30 size servos? I travel all over Asia and Europe, so it is easy for me to pick up import stuff (HK) as well as the more spendy high end stuff. I'm just rather overwhelmed by all the choices.