Drake does have a CEFIONTECT version, a much smoother glaze that cleans easier.
"CEFIONTECT is a toilet glazing that helps keep the toilet bowl clean for a lifetime. CEFIONTECT glazing seals the toilet bowl with an ionized barrier, creating a super smooth surface. This non-porous surface helps prevent particles from adhering to ceramic, while the catalyzed ion barrier actually repels particles away."
Totousa.com
They also have the insulated tank option. I've mainly sold those to homeowners with cold well water.
Since the new toilets use only part of the water in the tank, sweating hasn't been an issue.
