PCM fail-safe for throttle is a handy feature to have. However the older crowd seems to have a general dislike for PCM. Might be the cost, might be a general dislike of change, or might be a misunderstanding of the merits. PCM is a newer technology and the error checking is better than PPM. PCM will not save the airplane from continuous interference but might alert you to minor interference. I have and fly both.

Bill