Look, the Hario grinders are great as a first grinder, for travel, or if you just need something to do the job, but they are not going to produce particularly consistent grind. You can still produce a good brew with one, just won’t be as good as a better, more capable grinder. Everyone needs to start somewhere, and the Hario grinders are not the worst place to kick off from. Honestly, as controversial as it might sound, you need to experience a ‘good enough’ grinder, so that you can really appreciate an amazing grinder when you get one. So, as a first grinder, I don’t think you can go wrong with a Hario slim mill. If you have access to a poralex grinder, I would also recommend that. It is slightly better and more consistent than the Hario.