First disclaimer is that I thought about sticking this in the accessories forum, but it gets no traffic. However, if this gets moved, it won't break my heart.
Was looking at my pile of ARs this afternoon and contemplating onboard lighting. I realized that if 2003 ever called and wanted all their incandescent bulbs and ARMS mounts back, I wouldn't have anything left. Also, a lot of what I have strikes me as suffering from early 'aughts embiggening, when for some reason if you couldn't illuminate a target at 600 yards in the middle of the night with a 6 D-cell battery maglight the size of a truncheon zip-tied to your handguard, you were considered woefully unprepared. I kid slightly, but these two are typical of what I've got right now:
What I am interested in is a decent to excellent quality weapons mounted light with good ergonomics for mounting on a shorty AR (10.5" LMT MRP), and good illumination at essentially household-clearing distances. I have no real context for what good flashlights cost these days, so let's say a budget of $300 or less. What do you like?