I use them both but not usually in the same quilt. When using whites/neutrals, I follow the advice that a long time quilter gave me once. If you are going to mix, use at least 5 different neutrals. Then the differences are spread around the quilt and they look intentional and not a mistake if one happens to age differently. Of course, she was the quilt police and was telling me this after looking at one of my quilts but I think she was right on this one. So I either use a lot of whites or only one white off the same bolt.