The M1 is a lower power version, the F2 plus is much brighter, I do not remember the numbers, later tonight I could check....
the extra regulator box is no big deal. The f2 plus uses the F3 LED chip. see patterns here:
There are LED bulbs that have more power than the F2 LED bulb. F2 is 33 watts. F3 is 44 watts. NB35 is 44 watts. They both produce 33% more power than the F2. So they are brighter but.... You cannot compare these by which has the highest peak brightness. The F2 and the F3 have about the same...
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