Disconnects, no good ANC, pairing is beyond miserable. Use them again with another iphone and they work fine. Now somebody could claim apple engineers are so incompetent they can't implement basic bluetooth connection that plugs from china for 10 bucks can do better but I have problem believing that.
So that tight integration you praise so much can be absolute curse for arrogant behavior that apple is definitely not stranger to. Open standards and competition forces companies to behave nicely and ie buy bluetooth plugs without worry if any source device will work with it, not some wishful thinking. Main reason I never owned apple device and most probably never will, just insulting behavior towards me as paying customer.