Don't rule out using JR servos with your Futaba system. I fly Futaba but would not use anything other than JR digitals on the main flying controls (although I do use a high torque Futaba on my Roo airbrake).

I can get JR servos cheaper than the equivalent spec Futaba servo and their quality seems to be fantastic. Although I have only had a few flights with my Roo so far, the 6 JR digis have all been faultless.

I did originally intend to use Futaba 9151s but then discovered that they were suffering failures in big pattern planes. I sold them, switched to JR and never looked back