Top quality component.
Installation was very smooth - Staggered 3x3 tuners are labeled clearly. All you need is a screwdriver and a wrench. Thomann staff were also very helpful in confirming that these are a direct swap for the stock GOTOHs in my AZ2402.
Operation - No issues, looks and feels great. I was suprised that I felt the difference going from the 16:1 to 18:1 gear ratio - it is very, very smooth.
A little pricey for sure, but worth every penny. I would highly recommend these to anyone who wants to upgrade and escape from the pin-and-twist mechanism of the stock AZ tuners.