I have to forego some lightness for warmth to continue hiking into the cold season. I have a down jacket that cannot be used above 30 degrees and only for inactivity. No way I could hike in it. I also have a patagonia micro puff and love, love it. The micro vest adds a great layer for in camp and I have hiked in it many times. Its just right for me. I would love to have the micro puff jacket sans hood, but have not needed it. I know its more weight, but I found that the light down products were limited to camp use and seemed to get compressed during use. I retired two down vests before trying synthetic and doubt that I would ever go back. You might want to consider synthetic -- or not.