Haven't heard the others, but I've had the AZ Silver Ref. IIs and Satori shotgun biwire cables in my system for years. I've had several other manufacturers in here, but nothing so far has unseated the AZs. What they offer is lots of detail that's not thrown at you but rather presented in a very natural way. Tonality is also very good -- you can hear all the woodiness of stringed instruments and full soundboards of pianos -- but again it's not overdone to make it sound overly rich or romantic. Again, just very natural sounding. Imaging and soundstaging are also as good as I've heard from other cables/interconnects in this price range.
If I were to point out any shortcomings, in my system they are not the last word in bass tightness/quickness, but again tonality is very good. I have not heard the more expensive lines from AZ so don't know if they're any better in this or other areas, but I'd assume they probably are.
Anyway, that's my experience and maybe some things to listen for/consider during your audition process. Best of luck in your search.
