The JVC is totally fun sounding.Tried them out but nowhere near the M6 in terms of soundstage.Some might find the M6 a bit underwhelming.The Pl-21 have the best of both the JVC and M6.But the build quality is not as good as the M6 but good enough for a 800 bucks earphone.Always use the strain relief with the PL-21 if u want them to last more than a year.Might be a bit cumbersome to put them on with the strain relief but worth the effort.