We use headlamps to post flight the aircraft after night ops. Petzl is the brand of choice for flight crews however I was always paranoid of losing an expensive headlamp. It gets a bit hectic post flight and gear can wind up in someone else's helmet bag. With that, I've always used the el cheepo Energizer. If it gets lost or broken, no big deal. It's pretty easy on the batteries, illum is pretty good, no headaches and stays pretty stable on the head.
