Breville Barista Express (BES870XL)

The Barista Express earns its premium reputation with a brushed stainless exterior, a stainless portafilter, and a metal group head - but two plastic parts sit in the path. The removable 67oz water tank is BPA-free plastic (with a stainless-look outer skin on some versions, but a plastic body and lid), so cold water sits in plastic before it's heated, and the clear bean hopper that feeds the built-in grinder is plastic, so beans sit against and pour through plastic on their way to the grinder. Inside, Breville uses a thermocoil heating system with its own plumbing. The steel you see is real, but it's concentrated on the exterior and the portafilter, not the water and bean feed - so this is a "looks premium, plastic in the water and bean path" machine, not a plastic-free one.