Michelle, yes the machines are similar but both the Klic-N-Kut & Wishblade machines work off the computer not cartridges. You can pull free files off the net or purchase them from many different sites or create your own. There are other cutter machines out there like these such as Pazzles, Silhouette, etc... and am sure that as time passes, there will be more.
I started off with the Wishblade but wanted a faster cutter and one that would cut chipboard as well as other heavy materials. I have the Element but would like to upgrade to a unit that cuts at least 12" or wider... some day!

Neat machines! Here are a couple of links you can look at if you wish:
Machine Comparison Chart YouTube-Klic-N-Kut Demo (this is the machine I have)
YouTube- Craft Robo Demo (basically the same machine as the Wishblade)
I forgot to add... Yes, this is Ernie with his "What do you mean?" look. He's so bad! but cute!
This morning he has helped me make cupcakes for our niece's b'day party & am sure he is going to
want to help out with the icing later on today. He watches every move made in the kitchen and prays
something drops...LOL. Right now I have both him and Maggie at my side

love my fir kids!!!