And when you have memory issues complicated by 20 years of physical complications simple is the only way to go. Complicated is frustrating and either doesn’t get used, gets replaced, or goes in the trash.
I have nothing against Narsil, everyone usually loves it. For me, I can’t remember it’s nature. Hence, I don’t use it. Anduril has nice zones, and even I can remember how to access them all. So I use Anduril for that simple reason. It works, I can remember it, and the light that’s equipped with it is impressive as all get out. My 11 yr old has a D1S with Anduril and loves it. Sometimes he forgets how to operate lockout, or that he has to unlock it, but he navigates it well.
I don’t typically use Guppydrv for similar reasons. Richards new Boost driver offers the ability to lock the configuration menu so once the preferred UI is set up, lock it and forget it. And Neven’s LD-4A is also difficult for me to remember, I have to find and study the manual to make a change. It offers a password lockout to keep from messing things up. (I don’t use that, would forget the password)
I mod a lot of lights. A LOT of lights, sometimes 2 or 3 a day (occasionally even 4 or 5!). I want a cheap functional driver I can build and rely on without it giving my lack of memory cause for frustration. I have the components to build the FET+1 drivers and have done so for years now, at around $5 a driver. I could never have afforded to buy complicated buck or boost drivers for the 600 plus lights I’ve built! Nor could I have remembered how they all worked afterwards. lol Simple is a blessing for me, that’s really all there is to it.