I agree with the statement that the vocals are upfront on the w3 , they definitely are not shy or recessed at all ,combined with the bright treble the vocals can be very sibilant for some people ,including me , i overcome this by using two monster foam supertips on comply cores to eliminate the sibilance, however the gro7 is also very sibilant ,and although drums sounded very good , the treble plus the lack of mid/upper bass just sounded off to me , had the gro7 about 3 weeks than sold it on , had the w3 well over a year and still own them and enjoy there sound, the mid bass does make them a warm sounding but still with a very bright treble and the vocals are always very present and prominent within the mix. The w3 is one of the best i own for isolation by the way ,very good design .