For flying I think the Tactikka Plus is the best combination of kit. But there are other variants and brands, including ones that are a lot cheaper.
I bought the Energizer Headlight for my night flying, £10 from Tescos in the UK. It works fine, is very comfortable, but looks daft if you are seen wearing it!
As well as varoius Maglights I keep in my Flight bag, I also keep a couple of those light sticks that illuminate when you break them. They have a integral hook that allows you to clip them onto just about anything on the cabin roof. They provide a gentle illumination for over an hour, and the batteries can never fail...
tp