I wear an insulated hiking boot in the winter but have no experience with either of those. Neither of them look particularly great for cold weather, though good for wet weather. I would think for 20s they'd be fine.

What is often more important though is what you wear underneath. Make sure whatever you get is plenty roomy so that you can wear up to two layers of socks without the boots feeling tight. One thin layer next to your skin and a thicker outer sock. Really recommend merino wool for at least the outer sock.