The Disk Coffee Filter is a reusable filter designed with AeroPress in mind. The filter is metal, and it allows more oils and a fuller-bodied cup of coffee when used with the AeroPress. In addition, the Disk eliminates the need for paper filters, which is incredibly convenient when travelling.
The Disk Standard produces a fuller body cup of coffee with a bit more fines. It is thicker than the Disk Fine, should last many years of heavy use and is very hard to bend/damage.
The Disk Fine produces a lovely clean cup of coffee with minimal fines to none. However, it is thinner (1/3 of the Standard) and should be handled carefully as bending/damage is more likely.