I picked up a jetboil stove last fall and really like. Have used it on some weekend trips. I plan to take it on a 500 mile section hike next month. My question: if I make a cup of tea in the AM and a freeze dried dinner at night, how many days can I expect a cannister to last? I know "my mileage may vary, yada yada". But since I haven't burned through a cannister yet, I would appreciate hearing what others have experienced, so I can plan. Thanks!