Back in May I returned the JBL Live 670NCs and picked the JBL Tune 520BTs instead and so far I am pleasantly surprised with my decision. Don't get me wrong the Live 670s served me well, however, with me also picking up the JBL Live 770NCs in April I felt that the 670s were too similar to the 770s in terms of features. Review is coming by the way for the 770s. With the 520s I get enough of a difference while saving some money. Let's get into the mini review. Comfort I find the 520s to be more comfortable than the 670s. To me, the 670s clamped down on my ears and head while the 520s just sat on my ears. There is a piece of rubber or plastic at the top of the headband that provides some cushion. The ear cups are fine and work as intended. In all, I would say that the 520s are good for long listening sessions. Sound and Mic Quality The 520s are a budget set of headphones so I didn't expect much in the sound department but found them to be more than adequate for most casual lis