Dealextreme´s Ultrafire vs. Trustfire 18650 LI-Ion batteries

The WhateverFire cells are pretty much all the same. Word has it they're built in the same factory and just have different logos slapped on them.
 
I've been using the Ultrafire cells in my Dereelight with very good results: if I used my lights for a serious purpose- I'd get the AW batteries.
 

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