I own a pair of Bombas compression socks and I wear them for long flights. I like them, but I’ve never worn any other brand of compression socks. They are tight, but I thought that was the idea. I don’t find that they cut into the back of my knee, but everyone’s built a little different. Mind you, I haven’t been directed by a doctor to wear compression socks or anything like that. I think for a diagnosed medical condition, there are particular grades of compression, and I’m no expert at that.
I really like Bombas and wear them in everyday life too (but not compression for everyday). I can say they have an extremely generous return policy. I’ve ordered the wrong size and they have replaced with a new size free or charge. They’ve also sent me a different style if I wasn’t happy with the original. So it could be worth a try.