I love my kitchenAid Mixer and was so excited to use the Food Grinder attachment. The Food Grinder attachment is very easy to attach to the mixer, as well as remove. The instructions are clear and easy to follow when using this attachment. The grinder piece seems well made. I do recommend putting all grinder pieces as well as the meat in the freezer to ensure it’s very cold prior to using. 
The grinding process is not extremely slow and the grinder does an excellent job, especially when running the meat through twice. The machine is slightly loud but that is expected.  You can use the food grinder for many different meats or salsas. When using this food grinder I found my burgers were so much better tasting compared to pre ground meats. 
The only problem is that the food grinder is tough to clean throughly. Overall I am pleased with this item and look forward to continuing to use the grinder in my kitchen.