Right. It's difficult to understand what these companies do, probably even if you work there. Lots of bizarre moves in the last decade, if you look at Sennheiser over the previous decades. I guess everybody feels they have to diversify and get into popular niches.
Very well said and I agree with you generally. But if I look at the posts there are a few patterns that stand out. One is that for example people who come from mass-market thumpety-thump bass-cannon headphones that are really quite crap and they get a good pair of cans with a smooth response, they say the new/known-good headphones are crap because they don't have enough bass. That's wrong, they do have enough bass, but what they don't have is the overemphasized, bloated bass they're used to.
Here too, I have listened to enough headphones to know the HD 600s are not shouty. I haven't heard the HD 660s so I wonder if they're just recessed in the mids (the HD 650 is said to have this effect because of the tuning) compared to the HD 600s, so relatively, they seem shouty. But if you listen to the HD 600s out of a good amp, they are not shouty. The fact I can thoroughly enjoying listening to Joni Mitchell on these perhaps more than any set of cans I have, and it's not like fingernails on a blackboard is as much proof as I can give