I have a MSR pocket rocket stove that I regularly use for boiling water. I ran through the 2 MSR fuel canisters that I received with the stove. I'm wondering where you purchase your ISOPRO fuel canisters? I found that Walmart had an off-brand of ISOPRO which I purchased in 16oz size. But it didn't last very long, not sure why. So I think I want to go back to the MSR brand of fuel canister.