The M2 would in my opinion be more accurate, and is designed to be accurate without breakup at very high SPLs. It is also a 2-way that goes very low, but requires two stereo Crown amplifiers with the correct DSP (internal) to give them their very flat response, thousands of watts. I like 2-way with active crossovers for accuracy.
The Everest is far more attractive, and is designed more for moderate listening level accuracy, and the sound that pleases. Given the choice between the two for my home I'd go Everest, but I have considered buying the M2s just because they're far cheaper, or the home version that is much more attractive and probably has a less monitor-accurate (more forgiving) signature. I can get a big discount on JBL Pro, but not on consumer, that too colors my choices.
My opinion.