Jetboil is a very efficient stove. like Jim, I get about 6 days of use out of a 100 gram cannister.  The 100 gram costs $5 - the 230 gram is something like $6, maybe 7, and they have a new larger size that's 300 grams or so for $9  cheaper to buy the bigger cannisters, especially if you were to do more "cooking" than I do.   but I'd still bring at least a single 100 gram as spare.  I recylcle all those cannisters - just punch a hole in it first - you could do that on the trail, and squash the can with a rock I suppose, if you wanted to save a bit of space.

last year's trip - 12 days, less 1st breakfast and final dinner is more like 11 days stove use - used a single 230 gram cannister - near empty at the end, but still had enough fuel left for more boiling water.

year before, two of us - used two 230 gram canisters up, and ran out on the 13th morning so went to the backup/extra 100 gr can to finish breakfast.

I always do a fz dr meal for dinner, along with a cup of hot cider; breakfast is always 2 cups of coffee, and oatmeal 3 out of 4 days or so, doing instant breakfast the alternate days.  Always do a wash up/shave day in there also, so that's a liter or two more water to boil up.

I do think the Jetboil SOL is a bit more efficient than the standard model - a bit smaller and lighter also - I have both now and take the SOL on backpacking and Quetico trips both.  If you are only going to buy one, the SOL will work better in cold temps, down to 20 deg.

personally, I don't see the big todo about wood stoves - I've cooked over a twig fire using a dingle stick many a time - the can twig stoves would be more efficient, but by how much ?  a few minutes? another handful of twigs?

someone ought to do a comparison that includes just using 2 or 3 rocks in a mini horseshoe vs store bought stove and see if its worth it.  myself, If I'm going to bother starting a fire in a can to cook over, I'd just as soon start a real fire and enjoy it as a campfire after I was done cooking.