See if you can find a friend who owns a particular model and is comfortable letting you try it on. How it fits is the most important thing IMO.

Samsung ones seem reliable, but one big downside is that the app (Galaxy Wearable), has a number of required permissions. The app does not function without them, even if you don’t need those features. I’m not sure what the workarounds are, and maybe you can make do without the app, but here is the list:

• Calendar
• Call logs
• Contacts
• Nearby Devices
• Phone
• SMS

You can read more about the privacy aspect of the popular brands here:

https://foundation.mozilla.org/en/privacynotincluded/categories/headphones/