I have used jelly rolls and charm packs. I like the variety of fabrics you get in the pack. I haven't used a layer cake yet, but just bought a book that uses them. Can't wait to get a layer cake and start. It will have to wait, though as I don't have the extra money right now. As far as jelly rolls, if you want to make your own, it's easy. Even making charms and layer cakes is easy. So it's up to you. If you want to try it, jump in and buy something that really excites you.