I am real happy with the stove. My only worry was low temperature but it turned out fine. I used in the evening and the morning when there was an overnight low of 20 F and it worked like a charm. The graph on the package shows the performance suffers below 20 or so (it's not a real precise graph)
Boils a half-full container fast! Worked well with the container filled 95% too but it does take longer.
It is about 1" shorter than a nalgene 1L bottle and just slightly wider - FOR THE WHOLE THING! It's awesome how small it is when you pack it up! The 100g canister will fit inside the container along with all the other parts needed.