My Legacies, both FOCUS and Whisper, do an amazing job of layering the soundstage. With orchestral performance and small ensembles especially, you can hear definite 3-D imaging of the performers. The Whisper improves the vertical pattern over the FOCUS in that regard. It also gives a more linear front to the sound image as opposed to a "horseshoe" image with the center instruments, etc., sounding a little more distant (other than when the musicians are arranged this way, such as an orchestra) that the Focus projects.
I have always marvelled at how some listeners can't appreciate accurate musical soundstaging. The gold standard to judge the accuracy of the system is the real thing. Next time you have the opportunity to go to a live performance, note how much differentiation of soundstage layering you can perceive. There is no way you can tell a difference between the rows of the same instruments, but you should be able to tell the woodwinds are a little further away than the strings, then the brass, then the percussion, etc. Jazz or acoustic ensembles are probably the easiest to detect because of the relatively few instruments involved and distinct positioning of the musician in space. I like to listen to a recording then check the insert to see if there is a picture of the musicians being recorded to confirm my impressions of where the performers are relative to one another.
Of course, if the music is recorded in a studio not as an ensemble (in other words, each musician in a different recording room), the image either is artificial, or layering doesn't exist at all. This is the case in most modern music. If all the instruments are amplified and the amplifiers are stacked or otherwise near one another, again there will be no depth to the soundstage. Keep that in consideration when evaluating equipment.
Have fun and great listening!
