I have the Nothing CMF Headphones and just got the Nothing Ear (3a) about 2 weeks ago.
I love the CMF Headphones. I have now gotten one of my coworkers to buy one of his own and we both went on a company trip together with them. The ANC is fantastic and was great for the airport and airplane for travel.
The 3a are great so far. I have an iPhone, so I have had some issues with it disconnecting and not wanting to reconnect. But overall I am enjoying them and they are good earbuds and produce good sounds.
I love the ability to connect to multiple devices at once on both headphones and quickly switching between devices. Like when I was in the airport, I’d be listening to my iPhone while walking and then sit and switch between my Macbook and Steam Deck using the Nothing app on my iPhone.
I used to have Beats Studio Buds+ and AirPods, but I was looking for something else and have been satisfied with both of these so far.
Downsides…the 3a earbuds don’t seem to have as good of a solid connection than other earbuds. I just feel like it doesn’t have a good enough fit in my ears than other earbuds. I’m also not a fan of the way they label the noise canceling as it was confusing and that made me realize the noise canceling is not that different when it comes to low or high. Adaptive does seem to work in adjusting, but not as good as the CMF headphones, but that’s for obvious reasons with a better cover over the ears.
The charging case is also sometimes difficult to open because it doesn’t have a great indent for your fingers and you need to use your fingernails. It’s not always, just sometimes and can be a bit frustrating. There’s also the downside of no wireless charging for some, but I’m okay without it. Updating is a bit weird because it needs to be in a specific way to begin and continue updating and I have to read the instructions each time to let them update. I think it was like putting them in the case and leaving it open, but it was just an odd way to have the update go and it wasn’t fully instructive the first time I did it so I kept trying different things until finally understanding what they meant to begin updating.
But overall, I’m happy with both of them and the Nothing app for iPhone. I can’t speak for Android, but my coworker has Android and seemed to like his experience overall and not have issues with his CMF Headphones.