Among the many upgrades, the 10S includes SENA's highest quality speakers. This, to me, has been the biggest upgrade on the list. Loud, full audio is not something easily accomplished in a helmet, especially when it's working overtime trying to cancel out road noise, but the new speakers deliver without fault. On some of the older units I found myself having trouble with an overly eager voice activation system, a problem that I have not had at all while using the 10S. The sleek new design also keeps the unit from catching your jacket or shoulder if looking back or throwing yourself into aggressive lean-angles, which was a problem on some of the older bulkier pieces.