I'm not usually cold but, so far, this has been a "polar" winter. I have one on now, inside the house. I don't know if it's my imagination or not, but I hear the wind howling outside and know that the temperature is in the single digits and I just have to have a sweater on.
One of the sweaters is red and the other black. Both are wool. This is the IMPORTANT factor. I have lots of other sweaters and shrugs but they're not wool. Wool keeps me warm and toasty.
The red sweater has pockets. The black one does not. I r-e-a-l-l-y need pockets. Where do you put your chapstick without pockets, or a kleenex?
Here is how I "fixed" my black sweater. I hand sewed a vintage doily at pocket height onto one side of the black sweater. I sewed a little more than halfway around the circle of the doily.