I used Burst mode 100% for the pictures. As mentioned, the heat management is really good. The Delta goes on BURST mode 1-2 minutes before being forced to lower output. (Of course depending on the external conditions and how you or if you hold the light). The Alpha has a more material and my subjective view is that the heat goes further down to the body, making it survive a bit longer on burst mode before ramping down.
Glow board has no drawbacks. As Jason stated "it glows". I have it on my Alpha Carbon and there is nothing wrong with it. However, I didn't find any practical use yet. It actually makes me activate burst or high for 1-2 sec in the dark at home, to make it glow…. but destroying my night vision
Humans curiosity…
Another reason I chose not to have it is that it is green. As you see on my pictures, I personally like a bit of consistency when it comes to the appearance. Button, lanyard, should somehow fit to the light. Even the Orings. On my Alpha MIL/LEO I even replaced the blue Oring in the head with a black one . Black buttons, black lean years and bead. The Alpha has blue button, blue orings and blue lanyard. The carbon comes with the carbon structure color (grey, black mixture), so I built a lanyard that fits. However, here you are already limited since you cannot change the color of the canon tube. And then you have a green glow, that somehow does not fit in (on the other site, no one sees it at daytime
). For the delta I chose vivid colors, since the heat sink is made of copper giving it a red touch. So I did add an orange button and mixed orange color lanyard with a small titanium bead. The green glow would not fit here either.
But all I wrote here is just a personal tick… call me nerd or whatever.
I am also red green blind, which makes me experience the color spectrum is a funny way. So don't put much value to me decision to have the green removed.