5-in-1: Usually includes a flat platen (e.g., 12" x 15") for apparel, two plate attachments, and one or two mug attachments.
6-in-1: Adds a curved element for caps or an attachment for pens.
8-in-1: The most comprehensive option. Features a larger flat swing-away platen, specialized attachments for various mug/tumbler sizes, a hat/cap press, and multiple plate sizes. [1, 2, 3, 4, 5, 6]
Key