"JR type" servos for UCD3D
I would disagree. The servos are your direct connection to the airplane. You want them as precise as possible. Saving money on servos results in a sloppier flying airplane overall.
Also.. the DS 811 is only $47.95 at most places whereas the 4131 is $79.95.. so you're saving money by running the DS 811 DIGITAL.
-Doug