The standard paper filters. I even tried doubling them.

How about the Bonavita? It seems to be SCAA certified, also. Not customizable like the Brazen, but seems to do about the same thing as the Technivorm for about half the price. America's Test Kitchen liked it. Yes, I'd rather have something built by hand in the Netherlands than something built in China; just not sure how much of a premium I'm willing to pay in this instance. I like the idea of the glass-lined carafe.

bibere usque ad hilaritatem