That is true. I noticed too many positive reviews on so many headphones that I don't see why they get a good review, maybe because they do a couple things right. There are a couple headphones I dislike that are popular here because I felt they were one one trick ponies or just straight up boring or unpleasant to me. I have gotten some beef for bringing them up.
The HD 558 is basically a darker and warmer HD 598, right? I thought the HD 598 was nice but wasn't quite warm enough to be a true all-arounder. But it was a lot better than the HD 555, that is one boring and soulless headphone, I did not like it at all.
I agree with the Momentum, sounded good overall, if I were to be picky about the sound, it had a spike somewhere in the treble or upper midrange, but it is so uncomfortable, clamped too much and pressed the edges of my ears to my head, could only handle them 10 minutes on my head, I have a fairly big head and big ears. I liked the Momentum On-ear a lot better than the regular Momentum, much much more comfortable and I liked it's sound a little more.