Dealextreme is pretty good for the el cheapo flashlights that perform well above their price point. The main problem with dealextreme is you can end up on the site just pottering around then going 'Oh, that seems pretty good for the price'

I even ended up purchasing a Class A SE hybrid 6N11 Valve Head Phone Amplifier Might be even EMP prove..Well thats what I said to myself.

http://dx.com/p/6n11-class-a-hybrid-tube-headphone-amplifier-red-147151?item=1
(Should hopefully be quite good fed with a Cambridge Audio DacMagic Plus)

together with some additional 14500 and 18650 LiFePO4 batteries.

http://dx.com/p/soshine-rechargeable-1800mah-li-ion-18650-batteries-black-2-pcs-152954

http://dx.com/p/soshine-replacement-3-2v-700mah-aa-lithium-battery-black-4-pcs-152160?item=33

This flashlight looks pretty good;

http://dx.com/p/tk-566-cree-xp-g-r5-200-...-113171?item=13

as will take both conventional alkaline and NiMh AAs as well as 14500 rechargeable LiFePO4 cells.