Well,i have all 3 in my house at the moment,so i conducted a little test using a cd i know better than my wife(of 15 yrs),...............Pink Moon (i know every chord,breath and pluck on this cd) no question,for me i must be a "subjective",because I cant hear the Isolda,just the CD..............the Kimber beefs it up and the QED thins it out is that scientific?:) Isolda wins by a clear mile,so please stop telling me my kettle lead will work just as well:cool: