TrustFire SST-50
http://www.aliexpress.com/item/TrustFire-SST-50-1300LM-LED-Flashlight-Torch-5-mode/523174510.html
This would make a great host for an XM-L2 on copper
This light is usually closer to $50.
Vinh just updated my JetBeam M2S that was stock SST-50 to XML-2 with his custom driver. Easily my favorite light at the moment.