My I ask what the M361 29b V3 does different than say my m61 hi lowN?
Truth be told, I'm not a huge fan of tailcap activated mode switching. The M361 219B v3 has three output modes: 10, 70 and 330 lumens, changed by presses of the tailcap. While this is fine for a general utility light, I much prefer using a single-output drop-in with the high/low switch.
Another observation is that the 219B version of the M361 does not have as much throw as the standard Malkoff M361 (which has a brighter hot spot), but obviously the higher CRI of the 219B is amazing.
To date, my favorite Malkoff drop-in remains the M61N, with the M6NLL not far behind.