Okay, scrolled back through and saw the office use case, so Soren’s rec on the CMs probably holds up better unless perhaps the G4me Zero (closed back) is available in the EU in your price range. The CM may be the better overall headphone, I just prefer the flip up to mute functionality of the mic on the Senn G4me for conference calls.
Still have the trade-off of no Bluetooth if you have to connect to a phone with no headphone jack.