Henckels have a pretty precise bevel set at the factory. If you’ve sharpened them a lot, you may be reaching a point where it needs some professional attention. I do this cheap, if you can’t find a sharpener near you. Check sewing stores, unless you’re in the fortunate minority whose hardware stores haven’t become worthless faggots who don’t sharpen. You might try stones instead of ceramic sticks.
Carbon offers no advantage these days, except taste contamination and rust. The modern stainless alloys are fine for kitchen knives – Best Kitchen Knives Review.
Anyone who disses good kitchen cutlery is probably secretly a tofu-eating homo, a fast food-munching homo, or only slightly smarter than a retard. They’ve also never done any real cooking.
It is really not hard to find a reasonably priced, good quality knife set that will not dull for many years. When that happens you just buy another reasonably priced good quality set. Names and models don’t matter at all as long as it is stainless and made in Germany. Some people just like being pompous and picky.