The real question is: how much walking do you do?
My winter clothing has kept me warm in -15 degree weather. However, it absolutley sucks when hiking any distance into a spot, or tracking coyotes or cats. It's far too bulky and heavy, and if there's 6"-10" of snow on the ground it's even worse.
I'm personally switching to Sitka or First Lite. It's expensive, but I need lighter, more efficient clothing for what I do.