Well, that's kind of like asking are all cars essentially the same. At the core, yes, they all use the standard UPB protocol to control lights, etc. But you have all the difference like SAI/Gen I vs PCS/HAI Gen II, the look and feel of the switch, the LEDs colors, extra capabilities in UPStart, warranty, faceplates, etc. So, while essentially yes they do the same thing, there are still alot of difference to consider. I would search around from some of the threads that talk more specifically about the differences.