Inverted canister stoves are a lightweight alternative to liquid fueled (gasoline or kerosene) stoves in cold weather. Not only are they lighter, but they're more mechanically reliable. In my latest blog post, I review a good one, the Kovea Spider.
I've found it to be a really nice, compact stove.
For the future, I'd like to see Kovea do more to lighten the 5.9oz/168g Spider stove. I'd like to see a good remote canister stove down in the four ounce range, but this is such a nice little stove that it's hard to complain.
There is a lighter, by about 3/4 ounce, stove on the market, the FMS-118 Volcano, but there have been some complaints about the Volcano when in inverted canister mode, and I don't think the Volcano packs down anywhere near as small. I can get the Kovea Spider and a 110g canister of gas into either my 780ml Snow Peak pot or my MSR Titan kettle.
The Kovea Spider (KB-1109) Remote Canister Stove. Have a look if you like.
Adventures in Stoving