What are good clutches for an Audi A4?

Hi i have an 2001 Audi A4 Quattro Turbo, and my clutch is going south so i want to buy a good one. I don't want a racing clutch but i want something better then stock. I want to know what are good brands for my car, and also maybe some good web-sides that i can i get it from.What are good clutches for an Audi A4?ACT is all I see. If you can find better then buy it.