I have the XM4, which I replaced with the B&O EX. Really depends what you are looking for in terms of better- sound, ANC, app, fit, finish etc. The B&O for me beats the Sony in every aspect except for the ANC. That being said, I’ve stopped listening to tws and moved back to wired as sound quality is my main priority rather than convenience.
For close to audiophile sound in a tws, the current favourites are the Noble Fokus range and the Hifiman Svanar, but you will lose out in terms of stuff like ANC, apps etc, which are the main advantages of a tws.