Decades ago, I used a Svea 123 a lot and found it to be a real pita with priming and lighting. The wick would eventually get scorched and need to be replaced. Hopefully, they have improved since then. I eventually switched to an MSR pocket rocket propane stove. The canisters are a little bulky, but so aren't white gas fuel bottles. A large canister lasted 4 days with my wife doing the cooking for three of us; her meals are much more complicated than mine so I think it would be possible to stretch a canister to 5 or 6 days without too much trouble. The stove worked fine at an altitude of 9000 feet and temps to below freezing.
