Review (4/5): Depends on the razor you use
EDIT - These were highly dependent on the razor for me. I started using them in my Parker Variant and they are excellent in there. I hated them though in my Merkur slant and my vintage Gillette flare tip.
These blades were terrible for me. I’ve used several blades and these are the worst so far. Caused all kinds of irritation and didn’t seem all that sharp either. I tried them in two razors just to make sure it wasn’t the razor.
I had thought these were the “Israeli reds” that I’ve heard so many great things about but they were terrible for me.