Tests, teardowns and buying guides from the Tessel bench.
Same train, same playlist, twelve pairs. We measured noise, fit and battery and wrote down what actually mattered.
A looped playlist at 60 per cent volume, noise cancelling on, a fresh unit every time. Here is the rig and the spreadsheet.
A 75 per cent keyboard, a light mouse, one hub and one charger. Everything else went back in the box.