So I feel the JBL PartyBox 520 is right in that Goldilocks zone if you’re looking for a portable box speaker. It gets so loud you never wonder, huh I wish I had a little more or you never ask yourself what if you get second speaker… but its also not so overkill where you start thinking that getting it was a mistake like you’ll might think with either the JBL PartyBox 710 or JBL PartyBox Ultimate. Now in a lot of ways, I think the JBL Partybox 520 is the new more portable replacement for the partybox 710… but I still think theres room for a Partybox 720. Nonetheless today we’re going to compare the JBL Partybox 520 to the Partybox 710… and we’re going to see if its worth upgrading or waiting for the 720 if it ever comes out.