I agree with Brian. Just finished complete panel, aircraft wiring and setup. The capabilities of VPX is somewhat ingenious. It saves many connection points and aux relays, timers, diodes, resistors ect. Wiring in the flaps and trim simplified the electrical system. The technology used in the VPX is so much superior to any basic switch, circuit breaker and buss system. My worry as fair as single point failures are things like master disconnect relay, alternators, ect. After setup of the VPX and display access on the efis, I firmly believe VPX users with identify a electrical problem far before users of the conventional system. VPX will display information for each circuit and monitor the system as a complete system and display on efis ( Advanced in our case) Example in our case, when test fuel pump under full pressure, I was able to determine the pump was drawing 5.2amps rather than the 4.1amps according to pump specs, After running pump for over 2 minutes the efis warned of a problem and tripped the circuit. On takeoff, this would have happened shortly after wheels up. If I had a circuit breaker, I may not have identified this with out testing each circuit with a ammeter. My point is, this is some pretty cool technology we have available and I like it!