What is the difference (apart from availability and the price difference of CHF 110) between the Eureka Mignon Specialita for CHF 399 (https://www.digitec.ch/de/s1/product/eureka-mignon-specialita-eu-version-kaffeemuehle-16402770?tagIds=1249-603) and the Eureka Mignon Specialita for CHF 509 (https://www.digitec.ch/de/s1/product/eureka-mignon-specialita-eu-version-kaffeemuehle-16402764)