You want to make sure that you can easily slide garments on and off your heat press without burning your arms and hands and without damaging the garments on screws or greasy bolts. Some clam machines have a wide degree opening which allows for a safer, easier positioning of the garment on the lower platen, as well as safer positioning of transfers and other graphics. A Swinger or Drawer press will make it easier to layout garments. A Swinger will take up more counter space than a Drawer press, so it depends on your available work space and personal preference.