I bought this stove from an Ebay vendor - it looks just like the Bulin Beartooth B5 stove, but is labeled on the packaging as "One Road" model RT-807. cost $27.50 shipped.
I have been wanting to try a remote canister stove.
I ran a few quick tests to see how it does. I am not interested in speed, just fuel efficiency, so I did not time it. I measured the amount of fuel - by weight - that it used up in bringing 1 qt of water to a boil( measured temp of 210 degrees) from room temperature - approx 68 degrees. Indoors, with no windscreen. Average of 3 boils was 11.7 gm, which compares well with other remote canister stoves as measured by BPL. Not an exact comparison, as they quote amounts of fuel to boil 1 liter, while mine is per quart (simply because I do not have an accurate metric measuring cup). The difference is about 5% more water in a liter than in a qt. - so if it takes 5% more fuel for a liter, then it would be 12.2 gm/liter, still better than most remote stoves tested by BPL.
I kept the flame at the point where it was just reaching the edge of the bottom of the post but not going past it. Whether that is the actual most efficient flame, I don't know - I'd have to do more testing than I have time for at the moment.
Oh, and the actual weight on my scale for the stove is 152 gm.