For me… I’ll be the bringer of doom and gloom… nothing really. I bought a Duo… in hindsight should have kept the Zero! 🤣🤣🤣🤣🤣🤣🤣🤣
Ok… there’s one thing for me. 58mm paper filters on top of the puck. For a machine with a 3 way valve…. Best thing ever since sliced bread. I now backflush very infrequently. The water in my drip tray is pretty much clean!