Google would have told you that these phones have 40mm drivers as do the Sony MDR-7506's
You're right and I also checked it but at that time I was sleeping a bit
The 7506's are used by a number of us and I haven't heard much talk about the other 2, so I'd go with a known quantity. The 7506's are comfortable and I forget about them when using them while cutting my lawn, so I don't think size is a problem.
Yes I've read very good feedback about the 7506 but portability is very important for me, I need a foldable headphone and easy to carry otherwise I wouldn't bring it with me.
To each his own, but I've stopped buying equipment unless I've read a lot of positive things about it. I was an early adopter of a Zoom H4 (before I knew of Taperssection) and I won't do that any more.
I understand, I also before purchasing (still waiting for delivery) the Roland R-05 did a lot of research because I wanted to be sure not to buy something I wouldn't be happy about.
And as I said Taperssection has helped me a lot on this.