As of March, 2013: I've been using this system steadily since my last post, and really grown to like it. I've got the SOL burner (which has a "thermoregulator"; some of the other models don't), which is supposed to provide good performance into the teens. I'v used in down to the mid-twenties with no noticeable change in performance.

I've now given up my MSR kitchen, and hereby renounce my previous posts questioning the Jetboil. Yeah, it's that good. You may all commence pointing and giggling now; I deserve it.