I have a Technivorm Moccamaster KBG-V and they use good plastic for their parts but it's still plastic (except the thermal carafe etc). There's a new copycat version that's all glass and plastic (Simply Good I think?) but not sure how it actually performs.

What I'm surprised at is that no one has made non-plastic drop-in replacement parts for the reservoir, basket, and funnel. The KBG-V is highly modular so it's strange to me that no one has gone this route. It shouldn't change anything significant in the brewing process or quality of the coffee.