Have owned these for a while now and I think I have some comments. Overall, Bose QuetComfort 35 II is very good headphones, for me they are better than Sony WH-1000XM3, which is their main competitor. There are some things that Bose has that not Sony has, but first to the general good and bad about these lurking.
+ Extremely comfortable to wear. Very light and very good material, from the headband covers. You do not become as sweaty as with other over-ear and sometimes you completely forget that you have them, very good. The comfort is the best with qc 35 II I think, find it hard to imagine any other kids coming close, Sony wh 1000xm3 definitely does not (have tried them too).
+ Very smooth pairing and you can have 2 units connected to them simultaneously. Very smooth. Sony can't do this, one of the biggest reasons I chose them.
+ Clock clean controls. Prefer personal buttons over touch controls, but does not mind touch once it works. These work every time and it is easy to feel all buttons and they feel good to push down.
+ Very good noise reduction. Possibly it is not the best in the market (sonys xm3 is, according to most, somewhat better) but it is still really good, has difficulty thinking that there is some big difference. A little background noise "White noise" and clockwise to be able to choose between three modes with the button on the left cover (that button can also be tied to the selected voice assistant, google assistant, siri or alexa) high, low or off. Do not think it is necessary that the ANC eg. adapts to the surroundings or the like.
+ Very good build quality. Sure, they are mostly plastic but plastic is a light and durable material and it is the most important thing on a pair of headphones according to me, so I myself have no complaints. Have tried to pry and bend them considerably but they have not even made a sound and they feel very steady built.
+ Babe. Subjectively self-evident but I think these are the best looking kids in the market, including sonys lurking. Very classy, especially the blacks I have.
+ Good sound. Not as good as wired audio filler surely but still really good I think. Pretty flat sound, too little bass from the box according to my taste but it is easy to fix with an eq, which for some reason is not built into the bose connect app. Had been easy to have a built-in instead of having to look for a good in the play store. The sound gets approved, but it's not quite amazing.
Battery life. Actually, it's good, but Sony and Jabra's newest kids deliver better battery life than bose, not because bose is bad, it's just that they aren't really as good.
The price. Certainly they are expensive but at the same time you get what you pay for, these are really good lurks without direct weaknesses.
Micro USB. These were released in 2017 so it is still understandable, at the same time it is a little annoying to still be stuck with Micro-usb.
2.5mm socket in the headphones. Couldn't they just put a standard 3.5mm so you could use them with any auxiliary cable anyway? Now, the point is not to use them with cable, but still feel worth mentioning.
-Simply with accessories. Of course it is a small part of the grade but still a little strange on such expensive lurks. What you get in the case is a short, 30cm Micro-USB cable, a really thin 2.5mm-3.5mm audio cable that feels fragile and cheap. No aircraft adapter was received, however, it only cost 30kr on amazon so no big deal.
-No support for AptX or LDAC. Now the sound is pretty good in any case, but probably it could get even better with LDAC.
Overall, these get 9/10, only a few small things that make these not 10/10. Then if it is worth the money it is doubtful, but it tastes so it costs and these really taste. Good sound, extremely good ANC, very good build quality and they are smooth and easy to use.