The money of it, I don't know if it's worth it. I also have the precision adjust. The downside of the worksharp is that it has expensive spare parts. As for the Ken Onion, it is easy and very fast. The only difficulty is at the end, to keep the knife on the guide. Watch a video, for example, so that the tip doesn't bend, you have to stop a little before. Also, check out the blade grinding attachment. General impression:
- Good build quality
- Good sandpaper, although expensive, they don't wear out easily.
- Incredibly fast without heating up the knife, even with coarse sandpaper. You can change angles on a knife in seconds.
- You can also sharpen scissors.
Personally, I got it to sharpen my parents' knives that don't receive any care, so they become dull quickly.

Unfortunately, the first impression was not very good. What can I say, maybe I'm not doing something right, I manage to sharpen the knives but not to a satisfactory level. Youtubers from abroad praise the machine, but all I have seen so far is mediocrity. I will learn the machine better and evaluate it again in the future. After understanding the device better and with several experiments with different knives and correct angles, I managed to achieve a very satisfactory result. The device is very efficient, but it still has a very high price, which is a bit negative. For example, they sell it for 150 euros abroad. Other than that, I would recommend it.