I picked up a Black Friday deal at Batteryjunction.com for an Olight M20s Warrior, 420 lumens, $29 shipped! It is my second one, the first being a couple years old and putting out 320 lumens. I think I paid about $80 for that first one, so this one is quite a deal, and it is significantly brighter than the first one, which is plenty bright.
Thorfire sent me the TG05 to review and this light is a nice little light. it uses the XP-G2 r5 led emitter. i tested it at 285 lumens on an enloop aa battery. ?Cyber Monday Deals?ThorFire TG05 CREE XP-G2 LED Flashlight Mini EDC Torch Use AA Battery - - Amazon.com
I have been carrying this for the last 3 weeks and it performs great. Decent flood and decent throw.
anodizing is top quality and perfect and will take a drop.
I picked up a WF-501b on ebay for about $9 with an XM-L2 LED. Uses one 18650. Stupid bright. And the XM-L2 is about as efficient an LED as you can get. Poor heat dissipation from the LED module to the outer flashlight body in this particular model, and not very fine center spot focus. But cheap and effective. And you can probably scavenge batteries from an old laptop battery pack. Many use 18650s.
Like Milton said, thrunite tn12, but make sure its the 2014 model with the upgraded LED. I bought one of ebay for 45 bucks. Uses one 18650. I got thrunites 3400 Mah battery and I love the thing. Its got five modes you can switch with a side button, and a tail cap on/off switch with memory.. 5 modes, lowest being .7 lumens i believe, 80 lumens, 280, 800, and a max of 1050 lumens.