1Zpresso X-Pro and X-Ultra burr changes, comparisons and test results

A video showing the differences between the 1Zpresso X-Pro and X-Ultra grinders.
I talk about comparisons to Comandante and why people compare the C40 to other grinders like the 1Zpresso grinders.
Why people are saying that they prefer the original rounded X-Pro rounded burrs to the new X-Ultra sharp burrs and what the differences is between the two burrs.
I include some technical information to explain what flavours each of these two types of burrs produce and explain what brew types i tested each grinder for and what burrs i personally preferred between the two based on my tests.
I want to say that my personal preferences are based on my own taste, the beans that i used and the brewing methods that i prefer, you might find that you prefer something else based on your personal taste