About a year ago I posted my experience with Geodeck in this thread
Geodeck - Past Problems, Use Again? I won't write it all out again here, but Geo has one unique advantage over everything else: it's textured with a wirebrush finish.
It doesn't get scratched easily, but if it does you can take a wire brush or a serrated knife and make the marks go away in two minutes.
The finish also looks "woody" without being being a phony embossed grain.
Geodeck is colorfast, and because it's hollow it won't give your feet second degree burns in the summertime.