Think i would go for alluminium chequer plate covered MDF (or similar) for mine, but i get the reasoning behind it!
I also like the mesh some people use over here, like a 2mm guage fence all along the inside and you can company that with brackets for tools / winches and bags for kit etc. Will find a pic
This is a netting version
http://www.devon4x4.com/products_a/p...pouch-set.html