In reply to UKC Gear:
I've had one of these for just over a year now to supplement my MSR Dragonfly. I'd say the following about it ....
1. I'm one of those poor souls for whom the igniter is a bit flaky. So I carry a small lighter in the base just in case. I found one which fits inside the heat exchange when packing along with a few tea bags in a plastic bag.
2. The heat exchanger is awsome. The result is that even on full chat, put your hand above the server and you feel very little heat coming off. A 100g canister seems to last an inordinate amount of time so I'd say it's very efficient.
3. Stability is poor if placed on the ground. You always have to find (or make) a flat spot, and even a light wind will knock it over. I'm tempted to buy a hanging kit even though I don't big wall climb.
4. The effort it takes to get it out of your bag, assemble, light, and heat some water is a fraction of the pfaff you get with most other stoves so it's brilliant for slinging in a pack ready to make a cup of tea at the crag.
5. I car camp a reasonable amount with three kids. For heating water etc I just hand it to my 10 year old and he is able to use it very safely, the combination of the piezo lighter and lock together construction is great. I'd never do that with the dragonfly !
I would definitely recommend this stove with the following two provisos.
A. It is expensive. Is it worth what it costs ? If I lost it I'd replace it with another one without a second thought, but then I can afford to blow £65 on a non essential.
B. Actual cooking in this thing (rather than water heating and boil in the bag stuff) is a bit of a pain as it has a very tall narrow shape. I'd recommend buying something like an alpkit loon and even then it's something you do out of necessity rather than for fun