I would like introduce this high quality texture mod to you.
The author is Darooz.
Almost all textures of this mod is twice as large as those in QTP3.
This project is not completed yet and is planned to make most textures in Oblivion, including architectures, trees, landscapes, clothes, and more.
Here's the comparison:
[img]http://www.tesnexus.com/imageshare/images/547612-1321148377.jpg[/img]
You can grab it here:
http://planetelderscrolls.gamespy.com/View.php?view=oblivionmods.detail&id=6761