If I recall correctly, all models of the TRex 450 were CCPM. Some original ones were mCCPM like the Raptor, and the rest were/are eCCPM.

rcagpilot83: I suggest that you look at the number of posts and the information included below the avatar of the people providing information to you. Sometimes it provides very useful information about the credibility and experience of the person. Otherwise, you could do several things: 1. go to the member's page here in RCU and check out their "profile". This should provide with some hints about experience levels. 2. You could google the login name of the person. BarracudaHoickey uses the same login name in several helicopter related sites. His advice is normally taken seriously and typically not questioned.

Rafael