I like them a lot. Sound is very nice especially coming from the XM4s and coupled with pretty good ANC they make for great cans when you're out and about. I'm still using wired more often than not when gaming, so wireless is mostly for online (work) meetings or activities where I move around the apartment more often. My main gripe would be software, i.e., you need the app to adjust ANC and the app takes ages to load into the settings which can be quite the annoyance. Other than that I haven't had (m)any issues with them aside from slightly unreliable touch controls for switching songs mostly.

The main problem might be BT connection with your PC/laptop. Whilst I have absolutely no issues with them on my MacBook (which comes with lack of codec support other than AAC of course), but Windows has been annoying enough to make me go for the FiiO BTA30 Pro.