What Spanki said. :-) The answer depends upon how the texture is going to be applied, though. If you're talking about a UV-mapped mesh, then obviously a higher-res texture will yield higher-res renders. However, I purchased some large leather textures here some time ago, and have found them to be useless in Poser, because the app doesn't allow for scaling at all. (P4/PP ... I don't know about P5.) I can't, say, assign them as a material to a dress or purse for Victoria, because the scaling is all wrong. I've tried shrinking them in Photoshop, but that didn't seem to help. They're fine in Vue, because Vue gives you lots of control over textures, but in Poser there can be "issues."