I have asked many people about superior walls in my area and all say it is a great product. My next question does it matter who i get superior in nc or sc. is there a difference between plant that make the superior walls or should I get the best product for any one plant. We are thinking about going down 3 or 4 feet down and the front side to the river will be down 3 to 4 feet but the side to the drive way will be full 10 feet exposed but the 3 sides will be under. What would you suggest in this case. Thanks Chris