I managed to snag a UC USB-C with desk mount when Amazon first listed them. They went up in price by £120 within two days. Crazy. But I get it, they are exceptionally good and demand is high.First thing is that I was dead set on getting the USB C. The only difference between USB-C and A is (1) the USB Bluetooth which you put into your computer so the headset can properly pair is USB-C. Only modern laptops/computers have native USB-C ports; I had to buy an adaptor for my work computer. I think the charging point on the headset is different too but this is irrelevant if you get the desktop charger with the headset. Point being is that there is no difference in functionality for USB A/C versions of these headsets. None. The USB A is retailing for about £100 cheaper than USB C at the moment; consider buying that one.They fit very well; extremely comfortable and the ANC is superb. I particularly like how they pause whatever is on screen when you take them off. Do not underestimate how helpful this is. Saves clicking pause, taking them off, and then recommencing after whatever distracted you. The do not disturb red lights are good, a bit gimmicky, but good. The ‘talkthrough’ is powerful as well; I use this relatively frequently.I purchased these as I have a Mitel Micollab softphone on my computer and I needed to be able to have a headset which will work with this (i.e. Jabra or Plantronics only) and be compatible with my mobile phones. I was sick of my wired one-ear Jabra headset. It also needed to be able to use the softphone in/out of Citrix and be compatible with the dictate function in Word. It works perfectly with all programs and the sound quality for me and the other callers is excellent. It is concurrently connected to my computer and both mobile phones so whatever device I am contacted on, it will pick up all and does so immediately. It works with Zoom as well.Only thing I would point out is that the volume control are buttons. I would have liked something flush – but honestly I only mention this as I need to put something which might be improved.I would 100% buy again. This is currently the market leader for top of the range professional headsets.