Vitamix

Not a plastic-free brand, but one that at least sells the escape hatch: most machines ship with a BPA-free Tritan copolyester container, and the all-stainless container plus steel blade base is an optional upgrade that moves the blend wall off plastic. Even with that jar, the lid stays Tritan and the tamper stays plastic, so the food path is reduced-contact rather than plastic-free. It's an honest "here's the better option if you want it" posture rather than either denial or a clean design.