Both are good brands. The nice thing about a clam shell is that its only a two step operation, up & down. A swing arm has four steps, up, swing away, swing back over & down. Still a matter of preference. The main differences between the Mighty Press & The Hix are teflon coated (Mighty Press) or uncoated platen (Hix)? Floatational Heat platen on top (Mighty press) or floating platen on bottom (Hix). Over the center pressure adjustment knob (Mighty Press) or Pressure adjustment in back of the press (Hix).