Well I bought 2 of the Cirrus CDS750/ MG servos to put into one of my glow planes as a tester. I will let everyone know what I think of them. Heres the specs of the servos

Weight 1.93 Ounces
Speed 6.0V .20 Sec/ 60deg 4.8 .23 sec/ 60 deg
Torque 6.0V 143 Oz/ In 4.8 V 127 Oz/ In

They are metal geared and Digital. They are really tight with hardly any play in them. I am really interested to see what happens.