Need help deciding on north & south block

[Mark11B]

I've been looking to cool the North & South bridge for my evga 680i mobo. Im looking at the EK-NB ( http://www.petrastechshop.com/ekev68chwaa.html ), and EK-NF4 Rev. 1.1 ( http://www.petrastechshop.com/ekre11wanbo.html ). Would these two blocks be good or should i keep looking?

[disruptfam]

http://i212.photobucket.com/albums/cc30/disruptfam/Adamsworklog062.jpg

yes they look good i'm using them blocks