- Nobody cares about microgram scales. 1/10 of grams, however, are important, especially if you are dosing for espresso, where the amount of coffee affects the flow rate.
- Hario v60 and Aeropress are very different. The second one is an immersion brewer, which makes it easier to get good results even when your grinder isn't the best. The fact that they're made out of plastic is meaningless.
- Its really not simple at all. For years, I didn't have to care because I was blessed with pretty great instant coffee in the country where I lived. Unfortunately I moved to the UK and got to experience instant coffee hell. It was so bad that something had to be done. Few years later and here I am with a Flair manual lever espresso machine, temperature-control kettle and all the other tools you mention.
Sometimes, the taste sucks so much you gotta do something.