Low Beam/High Beam/pulsing low beam (for longer run times). If you have too many modes, it become tedious to cycle through the modes to find the one you want.
I like the option to hit a remote button and go to a high beam and back. I don't find it necessary to run a high beam for very long.
Commuting in the dark lends itself to the same type of lighting methodology as driving a car "on a winding mountain road". You switch between modes in a higher risk situation. Like a "T-intersection" or a blind curve. Active participation in lighting modes has help me in multiple car/bike encounters.