I've been using the LiteMax this last season, and have really been happy with it. From canoe camping to backpacking, its a great stove, especially for two. I like the flexibility of the pot holder, either unfolding it, or not, based on pot size, and its a very efficient stove. It will also simmer! I took a full cannister, and just boiled water to see what it did for fuel use. Here's my results. I did this with winter cold water out of my tap in Idaho, outside temps in the teens. I did it inside, with no wind, but have experienced almost identical results in the field, making sure to use a wind screen, and to protect the stove; all basic cooking and stove use protocols. One item to remember,(ask me how I found out?) if you use a large cannister, check your wind screen! The stove height off the ground is considerably higher, and your std screen might not even reach the stove flame!
The table shows amount of time to boil, beginning wt of cannister, end weight of cannister, and net use of fuel per boil(in oz.). Obviously its best case scenario, but still a baseline is a good place to start. Hope it helps.
1 liter of water reaching at least 200 degrees using GSI Soloist pot and lid
9 min 7.1 6.3 0.8
7m 45s 6.3 5.8 0.5
7m 36s 5.8 5.5 0.3
7m 55s 5.5 4.9 0.6
8m 4.9 4.4 0.5
7m 25s 4.4 3.9 0.5
8m 16s 3.9 3.4 0.5
4m 20s 3.4 3.0 0.4
Total Burn Time 60.28m
the last burn only reached 130 degrees before the cannister ran out.
Total Burn Time 60.28m, using the 4.1 cannister. 3.88 net fuel wt.
I've found that with partially used cannisters, I just weigh them when I get home, mark on the can with a sharpie how many more "boils" I can get, and use that can for a trip where that amount of fuel is applicable.
final note:after each boil I rinsed the pot in cold water to start each new boil with cold and "new" pot temps.