Purchased in January 2020.
As the owner of several different headphones, I believe that while these are the most expensive ones out of the bunch, they are worth their money.
Perhaps the most well-built headphones I have ever held in my hands, with aluminum construction on the earcups and a very premium feel. You can tell as soon as you touch them that they are a tool that won't easily break.
The battery life is very good, lasting up to 15 hours without a problem, and the cable is long enough (2m) so that it doesn't make it difficult to charge them while wearing them.
The microphone is amazing for wireless. All the wireless headphones I've had had a very bad microphone, as if you were speaking from a well. This one sounds very good, maybe even suitable for streaming.
I would prefer the earcups to be a bit deeper, so that the entire ear fits inside, and if it doesn't touch the drivers, which can be somewhat annoying after prolonged use. I'm not saying they are tiring, on the contrary, due to my work being on the computer, I wear them daily for 10-12 hours, and they don't cause me much pain or discomfort, but they could definitely be more comfortable.
The microphone is detachable, which you can do to wear them outside on the bus with your phone, since the microphone is not needed there.
You will need to download the iCUE from the Corsair website. And you may need to do a firmware update to detect it. I had this problem at the beginning. I have the stock settings on iCUE, but I would recommend turning off the RGB, as it drains the battery for no reason, and you can't even see it unlike the mouse or keyboard. There is also a notification bot that reports anything that happens (sound muted, charging battery, etc). I don't know if this is a software problem, but it's better to disable it by going to the settings, as it's just annoying after use.
I don't listen to a lot of music, and I don't hear a big difference between headphones in general, so I can't say if they are good or not in terms of music. They satisfy me. I didn't find any difference in sound between these, the Logitech G933, or the HyperX Cloud Flight. Although out of the three, these have by far the best microphone, the best software, and the best battery life. The only thing they lack is comfort, in which case Logitech is ahead in my opinion.
UPDATE (8/13/2020): The ear cushions are attached to the headphones with three plastic clips that lock with a 30-degree rotation. In my case, they broke. I don't know if it's my fault or if the plastic quality was not good, but the ear cushions started coming off very easily, and it became annoying. I contacted Corsair, and they sent me new ear cushions for free, without even needing to send them the headphones, photos of the problem, or even the serial number. As soon as I told them I had a problem, they asked for my address and details to start the shipment, without any proof that I am the owner of the headphones. Now they are like new. Everything else works perfectly.