Hey, so is that a JB Helios stove? How do you like it? How well does it handle the cold? Is the windscreen any good?
Yup, Helios. It's pretty efficient - almost as efficient as my Jetboil Sol, but it also works in the cold with the upside down canister. The windscreen is functional but too heavy for me to bring again. I don't like the button attachment to the base, which is hard to do in the cold with gloves, but on the other hand, it does sit in the right place once you attach it that way. In summer, I would not bring the screen to save some weight.
I like the size of the pot for snow melting and 3-person hiking (with my kids). Compared to my old setup of Snow Peak stove with MontBell titanium pot, it is efficent enough that the extra couple of ounces you carry will be made up by fuel savings after day 3 on any of my typical summer trips. When using more fuel in the cold it is absolutely the way to go.
The thing to know is that once you use the canister upside down, the adjustment of the flame gets much less repsonsive, plus never start the thing with the canister upside down (learned it with a nice puddle of burning propane - fun stuff as long as you're not doing that inside the tent :-))
Another issue, but more on a funny note: On windy days like the one we had before that picture was taken, the lid likes to catch big air and fly off. I had to descend a few hundred feet to the frozen lake below to retrieve it with crampons and ice axe. It's a perfect frisbee!
see also my comments in this thread http://www.whitneyzone.com/wz/ubbthreads.php/topics/11329/Stoves#Post11329