I just posted a review of the DealExtreme superflash clone on my Livejournal account:

http://johnridley.livejournal.com/343400.html

Compared to a real Superflash, I think it holds its own pretty well. Not as bright on axis, but as soon as you get off axis it compares very favorably,. At $3.54 shipped, I think it's a light to consider especially if you're the type that likes to keep a spare light or two in your bag to hand to ninjas, or if your organization wants to give away lights for a promotion or safety campaign.