Open headphones.
Used since 2007 to mix, in addition to pregnant MSP5 Yam (recently traded for Solo6 Be).

I bought from an Allen & Heath XD-53 on a recce to supplement low (and it is a closed headphone).

The +:
- Great sound, including bass, finally (/ Solo6)
- Comfortable to wear comfort + open headphones (it is not "locked")
- Strength: never had a problem, even with the cable (though I use it a lot, and I even carted in external session)

The -:?

Q / P: very correct, I think

Yes, I would buy ...