What features are you losing should you choose the CenCom Carbide rather than the CanTrol? If the Carbide is slated to directly compete with SoundOff's bluePRINT, I imagine that there will be CanTrol features deleted to reduce the cost.
Several evenings ago, I observed a PSP Interceptor Utility on a traffic stop, and the vehicle was displaying a unique flash pattern. The entire rear of the Liberty was steady-burn (half red/half blue). The front and rear corners were steady-burning too, and the takedowns were illuminated. The only lights that were flashing were the grille lights and the hideaways, and they were flashing in a slow wig-wag pattern. This was incredibly effective, and I believe this is very similar to the New England police configuration (I'm still waiting to learn all the related patterns).
With the bluePRINT and the CenCom Carbide, it is required to use an exterior lightbar from the same manufacturer?