Once you got the ArcWhite, put in White Star bulb (4D Cell Maglite Krypton bulb) with a set of rechargeables. You'll be stunned of its perfect focused reflector for this bulb and it out-throw A LOT of every 4AA light I have (Propoly 4AA, Tec 40, UK4AA). Of course, it's a bit yellow compared with xenon bulbs that Propoly and UK4AA use.
This is a great 4AA light especially with White Star bulb not to mention its white bright CCFT. The only thing I don't like is its fragile body and water-avoid desgin. For $6.50, you should grab it (them) and run.
I really wish Tec 40 could use its reflector.
Alan