I've decided to take a look at nUI today, made by K. Scott Piel. It's a complete all-in-one mod that supports a number of other mods such as Recount and Omen 3, and changes your complete user interface. See what the author has to say about it:

nUI is a user interface replacement for World of Warcraft. It is 100% standalone code designed to feel like Bliz meant the UI to look this way. nUI removes a ton of clutter from the display, provides detailed targeting information, an integrated HUD, cooldowns and more all in one tightly integrated single-source addon that requires no user configuration.



nUI is not a compilation of addons, it is one single mod that provides all of the functionality required to replace the Blizzard default UI. It is small, fast and efficient, easy to install, easy to use and come patch day you only have to worry about updating one mod.

See after the break for all the current features: