All of them!!! I have quite a few. I love that some have the extra features.. shadowing, layers, mirroring, etc. It all depends on your likes. They have such a wide variety. One of my favorite fonts is in the Animal crackers, and also Bon Appetit's font. I love my Slice. It's a great little machine, and I have had mine for years!!
I love them all too!!! I have 18 design cards.... I use Tag Maker a lot. Music and Dance and Paws and Claws are favorites of mine. Actually, I think they are all my favorites because each one has something different that I love about it. Have fun with your Slice!!!
I like the Vintage collection, Remember this, Noteworthy, and Paws and Claws. I have basic 1 and 2. The newer ones have more features which is nice but cost more. This makes the older ones cheaper to find on resale sites and they work just fine. I know you will enjoy your new toy!