In contrast to other comments in this forum, I have found the Shokz OC (version with left-side boom) to be no more accurate than the Sennheiser MB Pro 1/2 (now also marketed as EPOS Adapt/Impact) with which it is often compared. The aural characteristics are different on listening, but Dragon’s recognition accuracy is equivalent for both. Neither is as good as my gold-standard headset, the 15-year old Samson Airline 77, which I believe is now unusable in the USA because of re-allocation of radio channels a few years ago. 

The relevant radio bands were also re-allocated in Australia, but here the Airline 77 headset systems still work perfectly, provided the main Samson receiver is always switched off before turning off the headset — otherwise Dragon gets swamped with static. These units also chew through AAA batteries and are of course heavier than the Sennheiser MB Pro or the Shokz OC. Another user reported recently in this forum that the Samson Airline 77 headsets don’t work with Windows 10. That isn’t true. They work fine (and I expect they also will in Win 11), because the problem, if any, lies in the utilization of radio frequencies in the neighbourhood, and the particular radio channel used by the Samson. 

There is a modern replacement for the Samson Airline 77, the Airline 99M. This is lighter, more comfortable to wear, has a rechargeable battery and user-selectable radio channels. While I find it slightly less accurate than the 77 in use with Dragon, it is still more accurate than the Sennheiser or the Shokz, although it's twice their price. 

Given how accurate Dragon is in versions 15 & 16, these differences in accuracy don’t amount to much in practice. Hence for casual intermittent dictation I find myself reaching for the most comfortable and convenient headset, which for me is the Sennheiser MB Pro (or EPOS ADAPT). This comment is even more relevant when using the AI WhisperBoard, where it doesn’t seem to matter how terrible is the quality of your microphone — transcription proceeds OK even with conversations that are almost indecipherable on listening.

DaveR

Accuracy and a noise filtering were never an issue. We only stopped carrying the Sampson Airline 77 and 99 because they were too bulky and no longer in demand. As you pointed out, smaller, no AC power base required and less expensive Bluetooth devices were simply more popular. The Airlines were also unrealistic for mobile use. Bluetooth additionally adds the benefit of working on your cell phone

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