Federal standards for ambulance manufacturers (KKK-A-1822) are very specific about lighting configurations and modes, wiring, fusing, switching, even the font size for switch labels. Most all-in-one controllers won't cut it.A unified controller, with a 3-4 position slider, and multi-function buttons is much more better. Same amount of activation possibilities if not more, that can be operated by hand, eyes free.
Surface max is a lower grade LED and is not brighter then the M series. Not sure where you are getting your info from.It's the camera. The service near me switched to the Whelen surface max or whatever this style is called and it blows the old style and M series away.