Interesting. I’ve been eyeballing a boost-driver D1 for a bit, but after seeing the SC65c thermal throttling and knowing how quickly most Noctigon and Emisars step down due to heat, I might go for a DM11 since it has a bigger head, and will put more lumens “on target” with the TIR. My larger lights are all bucked/boosted and are set up for reasonable sustained output instead of being 30 second hand melters

I will contribute with a flashlight meme themed limerick:

There once was a man without foresight

Who’s wife did not approve his new flashlight

His Visa credit card

Lay out in the yard

But came four weeks later his new Hank light

Awesome, thanks!

Any chance you can measure the diameter of the driver?

I wish they had these available couple of years ago; I moved all my self-assembled lights to 21700 Hosts because cheap buck and boost drivers were only available in 20mm and 22mm sizes.