Able planet noise canceling headphone advice

[lesch2k]

are either of these 2 headphone options any good:

Able planet NC500SC. Dell website calls these "Sound Clarity Noise Canceling headphones" ($135.99)

http://accessories.us.dell.com...dhs&cs=19&sku=A1595331

Able Planet NC600. Dell calls these Clear Harmony NC600 Noies Canceling Stereo Headphones: ($118.99)

http://accessories.us.dell.com...dhs&cs=19&sku=A2136679


I have a $100 dell gift certificate burning a hole in my pocket....

 

[cheesehead]

Go buy some IEMs?