I like SR-303 much more than SR-X or my SR-Gamma. SR-303 is technically superior headphones and to my ears sounds much better. Bass is better, resolution in a level above and soundstage is a lot better. I don't get annoyed with the small upper midrange spike. I actually like it, as it pulled micro details to foreground and gives headphones better perceived resolution. SR-X I dislike as to me the sounds claustrophobic, cold and brittle. SR-Gamma I like, bit it does everything just a bit worth than SR-303 or my SR-Lambda. I like SR-Lambda and SR-303 about the same, both are nice, but I prefer SR-Lambda for old rock and jazz and SR-303 for very well recorded modern music.