At Alleborgh coffee machines in Almere where I picked up a mini tamper, I saw a few interesting machines: First a 'naked' La Marzocco showing how it works: Then a Marzocco grinder that was developed, I believe, by Etzinger. It sort of tamps too! And a professional PUQ press with a low flat head so you can stack a big heavy grinder on top of it to speed up the workflow: