Just spent a week with this and I have to say I love it. Having lived with just two stoves in the past 30 years - an Optimus 8R and an MSR Whisperlite - the JetBoil is what I have been looking for. If all you want to do is heat water you can't go wrong. If you like to "prepare" food in the back country keep looking.

Stability is a little lacking - particularly when heating a full 4 cups of water but I had no problem. Besides, if you tip it over it's just water. I was able to boil 14 quarts of water on a week long trip with only one canister and it still has fuel!

Ramen noodles need to be monitored for boil over but the flame is very adjustable and wasn't an issue.

I experienced the flame blowing out at very low settings and had a couple of times when the stove didn't ignite the first time but hair on the back of my hand was a little long anyway. Seriously, with your hand so close to the flame the piezo igniter should be VERY reliable. A telescoping control knob would be nice but this thing rocks!
Melting snow could be very tedious but canister stoves aren't really for winter anyway.

Overall this is a WINNER!

Just used this on a week long trip and was very impressed. In many ways I liked it better than the Bibler Ahwahnee I have had for years.
Light, spacious, and storm worthy, this may be the best value for a high mountain ultralight shelter.
The nysilk floor is very slick and even Thermarest's latest "sticky" pad (Prolite 4) material crept around a bit but it wasn't too bad. Just pick a level spot when you set it up.
I loved the huge door and window for cross ventilation which kept condensation to a minimum. My only complaint with single wall tents - and I have slept in a half of dozen of them from various manufacturers, is the frozen condensation that drips when it melts as the sun warms the tent. ToddTex fabric is a little better in that regard but it only becomes a problem when the wind blows and you have to really button the tent up. A vestibule would be nice but I have learned to live without one so it isn't a big deal.
If you are going high and light you could spend more but may actually get less.
Overall a very nice shelter for the money.

Just picked this bag up and couldn't be happier. I used the bag for a 7 day trip in the Wind River Mountains (early Sept) and was very impressed with the quality of the bag. I combined this with a Prolite 4 pad and slept very comfortably in sub freezing temps sleeping in long underwear and a fleece hat. I tend to sleep a little colder every year and was concerned this bag would be pushing the limits but it proved to be fine. Bag details I really like are the tucked stitching on the baffles (have had problems in the past with Marmot and Western Mountaineering with snags), face gasket, and cut - just about perfect for my build (5'9" 160). Things that could be improved on: A down filled removable collar would be nice - I know that the bag is only rated to 32 but I don't like to have to sleep on my back with the hood cinched up to be warm enough to sleep. Removing the side block baffle so that the user can "shift" the down from top to bottom or bottom to top. (Elimination of this could save enough $ and weight to pay for a collar and make the bag even more comfortable).