Rating: 4 / 5
I agree with the reviews above, about the lack of a suitable OEM windscreen. Using a windscreen (described below) with this stove, even in a light breeze, will reduce boil times and fuel burned by about 25%.
I've made a simple windscreen out of heavy duty aluminum foil folded over three times, with a finished size of approximately 6" x 12". The windscreen goes snugly around the cooking container, but only about 270 degrees of the total around the pot-to keep the canister from heating up (check this often). After the pot is removed from the stove the foil windscreen can be fitted snug around the pot to maintain its warmth for further cooking or re-hydrating. Most of the time we don't bother to bring the water to a full boil, as this isn't essential for most meals that use water for cooking or re-hydrating.
The stove's flame size is easily adjustable to cover only the bottom of the pot being used, and still lower for simmering.
With average air temperatures in the low 50's, we are able to boil (bubbles just beginning to rise from the bottom of the pot) approximately 6-7 liters of water from one small (7oz) fuel canister.