A couple years of use, and my M43's are still my favorite lights. I make excuses to use flashlights sometimes, but I make the most crazy excuses to fire up the M43. Like last night, my Nichia was about a foot closer to me than the light switch, so I used it to light the room for a couple hours. Or the other day, I procrastinated troubleshooting an circuit breaker until after sunset so I could use my M43. Or my favorite: two of my three bikes have M43 handlebar mounts...I often find reasons to "need" to ride them!
Just a solid light---size, efficiency, UI, looks, value. Nobody has equaled it yet, and I don't see it happening anytime soon.