I must admit before I heard them I was totally open minded and wasn't expecting much. Ok the ZS5 has received pretty favourable reviews and the 6 was going to expand on that. By all accounts it has been a success. I went for the green finish as I thought it looked great and from a distance Campfire Audio esque in looks. Ok just to get the one negative out of the way. There is a nasty harsh treble Spike, it's there but look it cost €45. In some cases at low volume it can be really enjoyable, it's a breath of fresh air with it's energetic feel. However at high to mid volume it can become unbearable and also the fit isn't great they move about a bit in your ear. If you're looking for best in class sound insulation again you're going to be disappointed here. But above all I didn't think you could get this kind of quality for this price it's amazing for the money. Huge soundstage and infinite detail even on the most demanding of tracks are all attributes that the KZ ZS6 has in abundance. Just buy a pair. Christmas is coming and it's an amazing stocking filler. Sounds at least treble the price it is.