Has anyone compared the Minimo or Joule to the Flash in cold temps? After hunting at about 20 degrees with my non-jetboil rig I decided it's time to upgrade ...

In general canister stoves are not at their best in cold weather without some exta help... here's some stuff to chew on:

http://www.jetboil.com/Support/FAQ/Does-Jetboil-Work-in-Cold-Weather/

Yeah, I know. But liquid fuel stoves are a pain in the azz. The two models I mentioned are supposed to be re-designed to perform better in the cold. If only the Joule were not so huge.

I also discovered that, if one must sleep with a gas cannister, better to sleep with the small ones ...

45 F is a joke but 10 F would do nicely.

I have used my Jetboil Ti by setting it in the snow, melting snow (I know it's not recommended) and boiling water down to 20 degrees at 12,000 feet elevation. It is a little slower in those conditions, and the snow tends to freeze to the bottle, but it works and is a quick, light, simple rig to boil water.

When melting snow you have to keep pushing snow to the bottom to keep it from running dry while melting snow. I usually add a quarter inch of water first before melting snow. I have tried to eliminate a stove from my pack, but just melting snow for water has saved me from heading down the mountain in search of water many times.