d25 uses tiny reflectors around 10 –12 mm, i have not seen any single round tir of those sizes. stock reflectors however are fine when led used is a right one, my d25 came with LB leds and had a nasty beam with a center hole. i swapped them for xpg3, and beam changed completely. no more holes.
to answer op question, i’d be interested in 2 at least, any nw led is fine, , and around 620nm red, no deep reds, i build several lights with DR, not as good as regular red, harder to see,