Here's what I use when backpacking:
http://www.youtube.com/user/sotooutdoor ... 06zfXXeCtg
(I tried to use the youtube brackets, but was unsuccessful. Sorry.)
http://www.sotooutdoors.com/products/item/OD-1R.html
Stove weighs 2.6 oz. Spin it on the cartridge, unfold the arms, open the valve, click the micro piezo igniter and start cooking in 10 seconds. Flame is extremely adjustable; I can boil a half gallon of water in a couple of minutes or turn down to a low simmer and bake a cake in my 1.1 lb. Optima oven. A large canister costs me $10 at REI and lasts for quite a few hours, depending on how high you run it. Once I have an expedition vehicle, this will still go with me as my emergency backup.