5 and the 8 was a great fit. This would definitely allow you to hear the music or book much better. These are heaven sent. I some spots where I had to use wall anchors and the base is too small. I would have otherwise used the new ones but because I have had the old ones for so long they were already broken in and fit perfectly to my head. Foners book is undoubtedly the best look at the Reconstruction period from its roots in the Civil War to its unfortunate destruction in the 1870s. But the material of the unit does not allow the bottles to shift around too much as I open and close the door. No more BassBuds for me. TV colors are sometimes hard to tell if they are accurate. Now let me start by saying that, as always with Anker, the sound quality is superb, and the clarity is stupendous, I have no idea how they managed to achieve this whilst making the speaker IP67 dust & water proof (which usually compromises on sound quality).