For the price the TANK007 TK-566 is pretty good costing around $15 and it compares very well to the older Fenix 2xAA L2D CE, but the TK-566 can be used as either a single AA or double AA flashlight. It is very lightweight and compact if used as a single AA cell flashlight with an Energiser AA Lithium cell.

Here is an earlier review from a few months ago.

http://forums.equipped.org/ubbthreads.php?ubb=showflat&Number=187063&page=1

Available here;

http://www.dealextreme.com/details.dx/sku.18626

Another review for the Fenix L2D CE (I actually prefer the cheap TK-566 over the L2D CE though) from nutnfancy who raves about the Fenix flashlights.

http://www.youtube.com/watch?v=QbWzhRB9_9Y