I like the setup at Sycophant Hex (http://www.sycophanthex.com/), which runs a variety of HP fic archives based on category. My favorite feature is being able to choose the font in which you view the site. I'm making a plea now for a feature of that type to be available in the new archive, because I detest having to read large blocks of text in a sans serif font. It makes the most compelling fic in the world read like instructions on how to program a VCR.