Thank you, to my ears the ZS6 is a little clearer, has better detail retrieval and bass is fast/punchy not boomy. The new bee foam tips are better than the original Comply tips, they do a great job at mellowing down the treble of ZS6. in my opinion ZS6 are a clear improvement on ZS5 in terms of build and sound. So you might want to wait for a great GearBest deal and order them. Hope this helps.