What kind of jump rope should I use?

I just ordered the Cardio 1: Jump Rope Workout DVD and I'm wondering what kind of jump rope I should purchase and from where.  I looked at the SSL youtube highlight video and saw a thin and a supper thick jump rope being used.  Can you offer some insight into what types of ropes are used and where they can be puchased?
 

Thanks everyone!!  I will

Thanks everyone!!  I will definately take a look at both lifeline and everlast.

FYI, I've got the Everlast

FYI, I've got the Everlast as well. It is the best of the leather ropes for sure.

i have been very happy with

i have been very happy with the everlast one i bought.  it is leather, wood handles with bearings. 

I have a variety of Lifeline

I have a variety of Lifeline brand jump ropes and they work great. The beaded rope is my favorite for general conditioning and the weighted speed rope (1.5 lbs.) adds a considerable challenge to core stability.