I went for Sennheiser earbuds because I am satisfied with my HD650 wired headphones.
Connectivity:
They connect instantly to my phone as soon as I take them out of the case. Only a few times did I need to put them back in and take them out again to reconnect, which might be their only downside, but it doesn't take away from their performance. It's mainly a software issue rather than a hardware one, and with a couple of future updates, it will be fixed. They don't have any lag because they operate on the aptX adaptive standard, which has a latency of around 60-70ms, easily passing the lip sync test.
Call quality:
I can hear and be heard very clearly. The microphone is not noise-canceling, but even with background noise, the person I'm talking to can hear me comfortably, although they can also hear the noise from my surroundings, but it doesn't cause any confusion.
Sound:
The bass and midrange sound impressively good for earbuds and almost flawlessly accurate. Instruments are detailed, vocals are clear, and overall the sound is very clean and doesn't distort even at high volume. The high frequencies don't sound good on their own, but this can be easily fixed with the EQ in the app, bringing them in line with the rest of the frequencies. After all, what matters is their ability to reproduce the intended frequency regardless of how they are tuned from the factory. The volume is also very loud and can't be tolerated at 100% for too long. Maybe up to 80% for someone who wants to listen to a song loudly, for example, but somewhere around 70-60%.
Features:
ANC: I tested it on a crowded ship with the noise from the engines. I couldn't hear anything else when I have it on and I'm watching or listening to something, it feels like I'm alone.
Transparency mode: It transfers voices to the ear as if you're hearing them with your own ears without any distortion in the voices of those around you, and it even auto-pauses whatever is playing at that moment, whether it's music or a YouTube/Netflix video, etc. Very useful.
EQ: It only has 3 bars: Bass, Midrange, and Treble. At first, I didn't like it, but in the end, it's very good and doesn't need more bars since Sennheiser has included all the frequencies within the range they represent. So, by adjusting, for example, the bass, all the bass frequencies that Sennheiser has defined as bass are adjusted. My settings are: bass -1, middle 1, treble 3, for anyone who wants to try. There is also a bass boost option for bassheads and a podcast option that emphasizes voices.
Touch controls: They are as sensitive as they should be, and each earbud has 4 functions, all adjustable from the app. 1 tap, 2 taps, 3 taps, and a long press. So, in total, there are 8 different functions, and I don't need to analyze them here.
Battery: I didn't have any problems with the battery life. It lasts over 7 hours on a single charge, and it covers everything I need. They also charge wirelessly and quickly.
Accessories and app:
They are comfortable and don't cause any discomfort even after prolonged use.
They come with 3 eartips: small, medium, and large. I use the large ones, and they seal the ear perfectly, resulting in no loss of quality or volume.
They also have 3 earwings (small, medium, large), which provide additional stability to the fit, so there's no risk of them falling out during activities like running. I use the large ones.