Because HID dropped only once could break a costly bulb, just before entering water on a well paid charter, wich is bad for you and you'r buddy
Is there a way to argue that, other that HID output more lumens...
Im almost certain to hammer a nail with my SSR90 PackHorse fashion moded Mag, enter water, and enjoy my lesser Led light.
check up on this board, the number of HID to Led conversion, rather than the opposite. Pack has some made....
Anyway, ive never seen a poor man divin' plus you are used to wreck and cave, must be well geared and rich, or verry poor like me, so why led ?
Give us your expectations, $$ , runtime, possiblity to switch battery between dive, dive conditions, its helpfull