Aesthetix Metis/IO preamp with Convergent Audio Technology Black Path Legend preamp??


Does anyone have any familiarity with the strengths of these  2 preamps--the Aesthetix Metis (linestage)/IO preamp vs C.A,T. Black Path Legend preamp??
converge
I don't know how much use this will be to you since I can comment only on the Metis linestage.  Less than a year ago it replaced my Aesthetix Calypso Eclipse level linestage which was already very good.  I was, well I'll use the word, startled, at how much of an improvement it was.  I had no idea a preamp could make that much difference in a system.  To itemize strengths, well it was just another whole level of sound quality--fuller, clearer sound, bigger soundstage, deeper resolution and somehow a more beautiful tone to the music.  
Jim Heckman