I am a really big fan of this cook system. Used the Jetboil for a lot of years until I picked this up.
Boils water very fast, at 5,000 ft I had 500ml of water boiling in about 1 minute. At 10,000 ft 500ml boiled in just under 2 minutes. Flux ring on the pot helps evenly distribute the heat. Haven't used the pot yet. I think the stove runs to hot to try and simmer or cook something but I haven't actually given it a go yet.
User friendly, easy to light. Green means go! It's ok to touch anything that is green. Don't touch anything else though or you'll get burned.
The stove itself is really small and folds down wicked tiny. It fits into a neoprene pouch that comes with the cook system that then wraps around a 230g fuel canister. The stove fits in the concave bottom of the canister and then you slide it into the pot, put the pan (lid) on the top, put it in the mesh storage bag and you're good to go.