I really like my Sugoi tights. They have a thin and warm fleece on the inside. For colder days--in the 30s and below, I have some old Performance tights with a wind panel on the front. They are pretty thick. For very cold days or before and after a cold ride, I pur on a pair of gore-Tex pants over my tights. But since I stopped bike commuting, I don't ride much when it gets that cold.

I find it best to get non-chamois tights and wear shorts under them.they last longer since you don't have to wash them after every ride like you do shorts.

I'm not a fan of the graphics on the Shebeast tights, but that's just personal preference.