To be honest, I would never use those free mats, I would prefer to go photograph anything I need and use the textures instead. Looking through the MATs that Bryce offers, and I know one can create almost any style of MAT, most of them make a Bryce pic look amateurish, with the exception of less complicated MATs used for metals etc.. The only way to get a more professional look is to use photgraphed textures. Just my opinion.