I am stuck on Sierra 10.12.6 because my business application uses Pages 4.3. and it can't be converted to a newer version. (Really, it can't.) I believe that 10.12 is the latest OS that reliably runs Pages 4.3. I currently use a Mini from late 2014, and it works pretty well. But it's slow sometimes, and I really need a faster option. Can someone suggest a faster machine to run Sierra and Pages 4.3?