I have the jacket and pants without the windstopper layer. super quiet and pretty warm down to around freezing, with proper layering.
I bought some of the extra-thick bibs during the St. Jude auction 2 years ago, and that stuff is MEGA warm! only problem is you look like the Michelin man when wearing it, haha! it's seriously thick.
I have always stayed away from the windstopper, because I have read it is noisy.
check out the recent thread on First Lite for my thoughts on their Sanctuary jacket, if interested.