The smaller of the GSI cookers is actually just over 2 lbs, which is 2 pint bottles of fuel, butI have a different method in my madness. The consideration for me is not the weight of the fuel vs the weight of the cooker, but the weight of the cooker vs the absolute minimization of any fuel use as a matter of principle. I might carry 2 pounds of aluminum to save a pound of fuel, especially as an experiment. Just as I might carry a couple pounds of fishing gear and happily not eat a single fish. In fact, in addition to an MSR, I will be carrying two experimental stoves: one that works sort of like but surpasses the ZZip (Sierra) Ztove, and a TLUD (Top Lit Updraft Gasifier) that costs nothing and weighs less than a No 10 can, tuna fish can and tomato paste can (because that's what it is made of) . Glad to let you know how it turns out.
