Sena 10, Schuberth C3.
I have the bace with Earbuds (ER6i) and it ROCKS!!! but am getting sick of the cords, so I tried the speakers in helmet.
Not very loud but OK, tried upgraded speakers (sound quality was marginally better but less volume). Not having to plug the speakers in my ears and then put the helmet on is more of a connivence but will most likely go back to the ER6i's due to sound quality.