Floor mats used to be one of the first things I would get rid of living in the rust belt. They keep the carpet and floor under the mat damp and salty...
There is a difference between the floor mats I would put in the Chevelle and those used in my daily drivers. In the Chevelle the primary requirement is appearance and quality after that would be functionality. I'm not driving it in rain if I can help it and it's not leaving the garage in winter.
For my daily you just can't beat Weathertech IMHO.