Ive been eyeballing them on ebay also. I like the fact that its all one unit and not fuel bottle to carry apart form the stove pump(well maybe). Ive been looking for a whitegas stove for winter. I also like that you can simmer (so Ive heard) so when I finally take the family on its first backpacking trip we can cook food and not have to buy canisters or a more expensive stove.
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My gear is no where near lightweight