Summary: I don't have extensive experience of bluetooth headphones but I have been really impressed with these since purchasing them a few weeks ago. My first pair were the UE9000 which I absolutely loved.
Pros: Sound quality, looks, build quality, ease/stability of connection, comfort, used price
Cons: No hard case, no skip track function, gloss plastic on cups finger print magnets.
Summary: The other reviewer said enough and in detail, so I will limit myself in giving my very brief opinion of their sound.
Later on in the Forum, in the "Huge Comparison" thread, I will make a sort of comparison with all the many BT Headphones I have tested, including the AKG.
Pros: Very good detail, very balanced sound, good soundstage, good comfort, somehow elegant, robust build.
Cons: Dramatically lacking bass, no personality, no EQ response, poor portability, pricy.
Summary: Take the well received Akg K545, and add 50 dollars for a mic, amp, nfc, battery and Bluetooth capability. Is it worth it? TLDR, if you don’t have an amp and/or want bluetooth, put this in your top three to consider at the 200 - 300 dollar price point. So in short, yes.
Pros: Consistent bluetooth sound, scales well, long battery life and range, design and build