CDE eCCPM has a 120 degree swashplate and uses "in-the-tx" mixing v.s. the older "mechanical" mixing type swashplate designs of some other versions of the Trex.

I dont have a Trex, but I have the MX-400...almost identical. Im using the E-flite S75 servos. Futaba S3108's would work well too if they fit.