I bought these headphones yesterday.
I used a PS 25 HD ...

The rendering is even more impressive with this model. The pressure is enormous (really serious attention to punchy!)
It insulates very well from the outside.

This is a great headphone. Now the question is whether the plastic is sturdy mechanical intensive DJ.

- How would you rate the quality / price?

Frankly very good. Sennheiser is the manufacturer of the most serious headphones. In addition spare parts are available in the catalog.
It comes with a spiral cable and a pair of headphones covered in velvet.

- With experience, you do again this choice? ...

Yes. the difference in quality between headphones around 90 euros and that's a huge ...