Oblivion Best Graphics mod?

I know there are a few mods that improve the graphics in Oblivion, but which is the best?

Also, can anyone tell me of mods that add more weather effects or a better looking sky or something similar

Qarl's is great for textures.

I also thought that the gamespot package had some good ones; specifically the grass without tiling mod and the distant landscape mod.

Also there is one called natural environments that supposed to be pretty good.

I havent been able to run Oblivion though. Its either my vid card (8800GTS) or the mods; some people said that there will be issues in the sewer beginning with some mods. Idunno.

http://www.tesnexus.com/downloads/file.php?id=15802

uhm its a body mod...and uhm nsfw but very nice and theres lots of armors for it too