Airport extreme gigabit ethernet hard drive recommend for wireless itunes?

[Don Spark]

Hi,

How do I get the best possible Hard drive performance (spending less if possible) with my itunes library with gigabit ethernet drive connected to the new airport extreme using a new macbook air unibody. My use will be an itunes library 300-600+gigs, video, audio and photo storage

I do not know the difference between a "home media server", a NAS and connecting a HD to AE w gigabit ethernet.

"In our experience, home media servers produce slower transfer speeds than your average desktop drive."
http://www.macworld.com/reviews/product/53768/review/home_media_network_hard_drive.html

Here are drives advertised as gigabit ethernet:
http://www.macworld.com/reviews/product/53768/review/home_media_network_hard_drive.html

http://www.macworld.com/article/154706/2010/10/mybooklive.html

http://www.macworld.com/article/138880/2009/02/mybook.html

http://www.macworld.com/article/140094/2009/11/lacie_network_space2.html

http://www.macworld.com/article/146947/2010/05/lacie_network_space_max.html

http://www.macworld.com/article/146668/2010/02/lacie_network_2.html

thanks,
Don