I just picked up this cheap one made by Cree
I wasnt expecting much but was I wrong! 900 lumens really bright, out does my surefire 200 lumen light. I have been using it nightly walking my dog in the field for the past three weeks. So for the $14.00 I paid for it was worth it even if it only last for a few months.
I also bought the UltraFire Protected 18650 4000mAh Rechargeable Batteries
Amazon.com: Ultrafire WF 501b Cree Xml T6 3 Mode Cree Led Flashlight 900 Lumens: Home Improvement
Oh a Bonus with this light it's the same diameter as my light mounted to my shotgun including my pressure switch. I dont know if it would hold up as shotgun light but it will mount.