Get the premium one, its much thicker and doesnt move, also stops some of the noise that comes from the boot area.
For anyone around Basingstoke, I have one in my garage loft they can have for a token gesture/dontation to the club. I CBA to post it, so would have to be picked up from me when I am around, but that can be arranged It has a couple of slits cut in it for the boot divider which I dont have any more, but I dont think they are obvious from what I remember.