I enjoy using it for playing music, apps, and text/email.
I cannot tell you how many fights I've gotten into with my wife because half the time when she needs to talk to me she can barely understand what I'm saying, and I have the same problem. Any background noise (whether using a bluetooth earpeice, speaker, or the phone itelf, makes it impossible to carry on a conversation.
Sound quality is terrible. Connection for most of the places I would like to use it a sparse.... I don't know if there is any way to improve it.