Kent,

First of all, bleed-through or whatever, is EXACTLY what you want...that's what we really hear.  We are not machines isolating sound frequencies, it is a blend. Advantages?  Those resonances/frequencies that have the same bandwidth, groove together, achieving resonance..and, my friend, when that happens, the auditory experience is quite stunning.  Ever gone to the symphony, Kent, and had a great seat, in a room with good/great acoustics?  The experience, you will agree is nearly overwhelming.  Well, that sound is not only pure analog, but also..MONO. 

The only way to appreciate the difference, is to do side by side comparisons.  Now, I have several/many recordings of the same thing on both CD and vinyl.  I  put 'em on and switch from one to another.  On some...I can tell little difference.  But when there is one better than another, it is usually the vinyl/analog recording.  The "warmth" factor refers to the emotional content/feel/flow of the music, not a techincal frequency appreciation thing.

It's nearly like hearing the singer/horn player/guitarist..laugh, cry, sigh more...that's what I mean by WARMTH.   Well...you'll just have to come over hear some time, and we can do the switch thing..and you'll see what I mean.   All vinyl, BTW, will not have the loudness/volume of CD, that's the first thing you notice.  Sooo...whenever  I do one of my comparisons, I adjust the volume levels accordingly, but  that's all.  The rest is up to the listener..as Jimi once said, "with hearts, any kinda hearts..and EARS". 

Now, I shall return to a "mixed" vinyl/CD evening...alone...my date gave me some bullshit excuse...oh well..

Gene