Plug Charging cable question

I want to get some 24AWG cables from monoprice to charge my Nexus 5 and Nexus 10...If I am going to be using these cables for charging only, do I need the ferrite core? Also...any recommendations for a good 2 amp wall charger?

This one without:
http://www.monoprice.com/Product?ab3...s_id%3D1030307

or this one with the ferrite core?
http://www.monoprice.com/Product?ab3...s_id%3D1030307