Grit choices should fall in line with the steel used to make the knives you plan to sharpen. If your knives are all European, relatively soft steel knives, then you could finish off your knives at the 1,000 – 2,000 grit level. There is a lengthy explanation regarding this topic but suffice it to say that at 2,000 grit, these knives can be made extremely sharp.

If you don’t have a problem with the water-lubrication system in your working environment, Waterstones is the most common and affordable models to obtain. They are available in various abrasive grit grade from coarse to extra fine mesh. They generally made by Aluminum Oxide, which provides faster cutting. The downside of the Waterstone, they wear down more quickly as the impact of the old abrasive materials that break the stone itself. It is why Waterstone requires frequent flattening to keep it evenly. It is recommended you have one of diamond stones to help you for regular flattening become easier.
When starting out sharpening, it won’t be long before you hear about the “toothy” vs “polished” edge. It will suffice to know that a 1k stone is going to give you an edge that will perform beautifully as will a knife finished at 5k. There is a belief that a knife that has a highly polished finish, 5k and up will be so polished that it’s toothy goodness will be erased. This knife will not bite into the skin of a tomato for example because the edge is too polished, it will slide over the top. This is not always true, if the knife has been sharpened well, i.e. if Side A and Side B of the blade meet precisely at the Apex of the knife, that edge will slide into a tomato quite beautifully. I have seen many brand new Japanese knives with highly polished 8k edges that no tomato skin can stand up to.
It looks like it can be a Sci-Fi film prop. This is a 2 stage type of sharpening system. You'll get a non slip cushion with it which is at the bottom offering stability for the user. It's ergonomic handle provides a comfortable and easy grip. This cushion offers the stability needed when sharpening and polishing your pocket knife to it's absolute razor sharpness. The sharpener does the work as you hold down the grip and simply place your pocket knife to get sharpened by the motions of the ceramic and diamond sharpener wheels. Simply run your dull knives through the device and you'll get the results you've been looking for. This one will definitely help you when you learn how to sharpen a pocket knife on the Priority Chef.