I have a MG P Rocket flashlight that use a SST-50. It's brighter than the P7 and it seem like it is more efficient in the power use, but I have yet actually prove that. I will have to take the same 18650 battery and run on HI on both flaslight to see if it is. One day with more time, I might do that.

I mount the flashlight on my helmet. If I cast the beam on the same spot as my Magic Shine 900, the P Rocket will cover the MS light.....barely. This might be because the P Rocket has a more white color as compare to the slight greenish tint from my MS.

I bought my MG P Rocket SST 50 light from Shiningbeam.