Then I tried some "weathered barn siding" Which I also like. The horizontal lines make it look like it should be on the cover of and Indie Band's CD!
Then I tried this scratched "aircraft aluminum" which I still think looks pretty cool, but of the three its my least favorite.
All in all, I enjoyed trying these out! It was way fun, and the texture overlays are free at Grunge Textures. Try some out and let me know what yours ended up looking like!