Sound wise, are there differences between the glossy and matte versions of the ZS3? I see it being described as bassy, but I have the glossy one and it doesn't seem as bassy as some people described it to be. Decent amount of bass but the sub bass doesn't extend that low, even with a good seal.

Does anyone have both the KZ ZS3 and the 4in1's? How do they compare, especially in soundstage?