I really like my INON LE-550W lights - 75 degree wide angle 550 lumen lights that use 3 AA batteries. Cost a little over $200 each and I have two. They make some nice little brackets that will attach to a strobe arm - I sometimes dive with the lights on a little flex shoe arm on the cold shoe of a FIX housing, sometimes just the lights sometimes with D2000 strobe as well, or else everything on a regular tray/arm setuo. They come with a little diffuser to make an even wider beam. Nice even beam. IMHO MUCH brighter than Big Blue lights, even those with similar output ratings, great color temo 6000K and freshly charged eneloops will run them for two dives if not on all the time.