Light, convenient, and better at altitude than off-brand fuel I've tried. Our local Army Surpluss store carries these relatively cheap. I've gotten 8-10 quart boils with my Pocket Rocket on a 4 oz can.

These canisters are good for short trips, i usually carry the smaller one it lasts for a bunch of meals. Not as cheap as white gas but it works, + you dont have to prime the stove.