Recently I bought this logitech bluetooth speaker from amazon.its sound qaulity is very good, this speaker is very useful when you are going to picknic or for hangout with friends to a place where we dont have a access to electricity.
It is loud enough and its battery lasts upto 4 hour it supports phone calls, when more then one person wants to talk on phone its very useful beacuse it have mic also
My experience is good with this speaker but my opinion is its price should be less
