A coffee pod machine uses pre-packaged coffee pods or capsules to brew a single serving of coffee, while a fully automatic espresso machine grinds fresh coffee beans and brews espresso-based drinks at the touch of a button. The coffee pod machine is more convenient and requires less maintenance, but it may produce a lower quality of coffee compared to a fully automatic espresso machine. The fully automatic espresso machine offers more customization options and the ability to use different types of coffee beans, but it requires more effort in terms of maintenance and cleaning. **

For a fully automatic coffee machine, it is recommended to use espresso beans. Espresso beans are specifically roasted and ground to create a rich and concentrated flavor that is ideal for espresso-based drinks like lattes, cappuccinos, and macchiatos. Using espresso beans will ensure that you get the best results and a delicious cup of coffee every time you use your fully automatic coffee machine. **

The ethical justifiability of owning a fully automatic coffee machine that consumes a lot of water through cleaning the brewing group internals depends on the context. If the machine is being used in a region with abundant water resources and the water consumption is not contributing to water scarcity or environmental harm, then it may be ethically justifiable. However, if the machine is being used in a water-stressed area or the excessive water consumption is contributing to environmental harm, then it may not be ethically justifiable. In such cases, it would be important to consider alternative, more sustainable options for coffee preparation. **