One more vote for liquid multifuel (ie MSR Whisperlite / Optimus Nova / etc). I'm not sure why so many people are insisting on canister or alcohol solutions. Regardless of Walmart or any other retailer's current stocking policy, no one can possibly argue that canisters or bottled alcohol are easier to find than gas stations. Alcohol stoves have no output control, have low output, burn more fuel than hyrocarbon stoves, and do not work at altitude.