The Ghar is fantastic as is the SG Gruman. No offense Rodney, but if you think the KUIU SD and the Uncompaghre are warm, you don't spend much time in the cold. Both nice jackets, but not warm by any stretch. (yes, I have them both) The Sitka Kelvin WS is also a very nice puffy, but a bit heavier than the others.
I've been in my Super Down pro to 0 degrees and I was plenty warm, how cold are you talking?