i have all 3 of them and the sensor. I normally just use two out of the 4 manly the greenx sunny days then my sensor flat,cloudy, snowy and night conditions. Sensor is normally on my IO for 80 percent of the time. I mainly ride at night. Platinum and ignitor i cant see too much difference.
I have the platinum, ignitor, and sensor. I use the sensor most of the time because it's usually cloudy and crappy in the NW. I don't really like the ingitor, none of the details really pop like they do with the sensor and if it's too bright for the sensor, the platinum is better than the ignitor.