Magicshine has made reasonably priced MTB lights for years. Magicshine co-brands and actually makes the headlight.
This particular model comes with a separate battery pack and boasts 3500 lumen on high. While it has few reviews on Amazon, they are all positive.
When you are riding on pavement, this is NOT a light for riding public roads. It has no beam cutoff and would likely blind any and everybody its pointed in the direction of.
This light comes bundled with a free RN 100TL (MSRP $49.95) taillight.
As a new user, you will also get a free i1R2 pro keychain light. Go to checkout page, enter "oz5" (limit one time per person) in Coupon Code Column and click Apply button, bringing your net price down to $139.98. That's a pretty ozbargained low price for such a ridiculously bright off road light. Enjoy!
I am a happy user of your RN1500, RN800 and RN120. I wish the battery capacity was greater, but I appreciate the compact size.