I have been using Pearl Izumi Elites for years now...nothing bad to say other than I wear holes into it every other season and have to keep replacing them. They are awesome down to the coldest Chicago and northern Montana Rockies can deliver. I just had to sew up another hole and decided it's time to upgrade or try something new.
I'd like to hear which brands you like for cold weather running pants. I don't know any other brands and I am guessing, like Pearl Izumi, they have levels or thicknesses.
Thanks in advance for your comments.