Pros: Small, lightweight, GREAT sound, can listen to music and hear your phone's notifications, and decent battery life. STAYS IN MY EAR! *see cons*
Cons: The ear loop is tiny and flimsy and I found it very difficult to put on, and when I got it on, it felt like it was going to fall right off my ear, so I just don't use it. The in-ear method is designed very and won't come out even if I shake my head.