If you want it for household use, buy it without hesitation and follow the instructions for proper sharpening. If after sharpening you feel that your knife is not cutting, repeat the instructions until it starts cutting!

I use it to sharpen the knives in my house, I am very satisfied, it made even the IKEA knife sharper than when it was new.
I understood the value of having a sharpener after I bought it. I thought I would use it once a year, but I use it once a month on the knife I mainly use.
The 2 stages allow for proper sharpening and it has precise instructions on how to sharpen correctly.
Recently, I discovered that there is a very good sharpener near my house. If I ever have the opportunity, I would gladly share the comparison with you.