So imo, with a comparison of the 20s with iasus speakers, a packtalk bold jbl with 45 mm speakers and the sena 50s with stock speakers i find the sena 50s to have the best sound for music out of all. Thats what i use it for most commonly. Also the 50s speakers are fairly thin. I would have put money on the packtalk being best but imo its not. Now the packtalk does work its features better as in noise canceling and voice commands but i think those are issues that might be addressed by updates. Please share your experience. Had I not tried the new sena I would be happy with the packtalk. This all started with a quest to get a new helmet to replace an old neotec. Its so comfortable. The neotec 2 is nice but at 4lbs I thought I would find something lighter. Best replacement I found for the old neotec so far is the Bell SRT and Schuberth c3pro.