I have the Ryobi 18v xenon light with the swivel head that came with the combo-kit I bought eons ago. It's worked fine -- I've dropped it, kicked it, etc., though I haven't hammered with it or stirred the burn barrel with it...
Biggest PITA with these is that the bulbs are freakin' rediculously priced. You can get them at HD, Lowe's, etc., in a two pack but they're like $20 for two. That said, I just had to replace my original for the first time after 6 years or so. I think the replacements were dewalt. All you need to do is match the voltage, the base, and the type (xenon).
