I got mine today and did a few knives. If you are on the fence, go for it, especially if you sit down and do four or more knives at a time. I only had to go down to a coarse stone for one knife that had a little chip, and put a finish on the bevels with a natural stone and did uras and microbevels with the 6k. I haven't tried yanagiba or deba edges on fish, but the gyuto and usuba edges were impressive on the veg I had around the house. I saved a ton of time compared to my normal progression, maybe 25%. I even did the lady's 10" Wusthof on the 1k and deburred on the 6k, less than five minutes.