This review is useful if you know how to analyze it.
OP's dislike of the Beyers is irrelevant. Each person is different, so you need to judge this review against what he DOES like.
OP loves his Sennheiser HD-650s, so that's going to be his neutral, reference point.
I'm really glad he mentioned this, because many reviewers don't. You can only have real information if it's measured relative to something else.
Now, I've owned the HD-650s for several months. I like all types of music (even country) because I play guitar and I used to DJ hip hop and trance.
I owned those cans for three months before I happily sold those over-loved, over-hyped, over-estimated, no bass having P.O.S.
When you read a review, you always need to know what the reviewer's idea of "neutral" is.
OP's neutral is the HD650. Mine is the Sony MDR-V900 because I grew up with the Sony sound.
People who dig Sennheisers will rarely give a decent review on bass heavy cans.
It will always like mud to them. It will always be too much of this or not enough of that.
Why? Because they already have a "perfect" can in their minds: HD-650, or HD-800, or some other Sennheiser.
That doesn't make their opinions wrong. It's just you have to understand what their idea of neutral is and gauge it against your own.
So conversely, Sennheisers will always be lacking in bass for me.
People who are predisposed to hating something will always give a bad review.
You grew up with muscle cars. Are you going to give a good review of a Japanese sports car?
You grew up with jazz. Are you going to give a good review of a hip hop album?
Of course not.
Each can is good at nothing or good at something. But no can is good at everything.
Here's my test:
Would Snoop Dogg, or any professional rapper, listen to his own music through any Sennheiser and say:
"Wow, that's some perfectly balanced bass right there: not too much, not too little."
Of course not. They will be completely disappointed at how little there is. Hip hop culture dictates that you have gigantic woofers in your car.
That is a Sennheiser lover's nightmare.
So, there is no one "neutral." Such a thing does not exist. It is pointless to try and get one can to do it all.