Used my stove for the first time at the weekend and it boiled a relatively large kettle full of water within minutes - much, much quicker than my full sized camping stove. Once you've read the instructions and burnt the hairs on the backs of your fingers, it's really easy to use (just don't get too close when 'priming' the stove!!) When it gets going, the fuel burns with a satisfying roar (possibly too loudly for some people) which is easily moderated by the fuel valve. I've heard it can be hard to 'simmer' which I can imagine but if your needs are not this advanced, I think you'd be hard pushed to find a better stove. It also packs away to a fairly small size.
(Written by: dave_mck)