I have`nt heard them all.The Herron is superb,and so is the Aesthetix.I listened to the Manley for a week when it first became available,i was impressed,but not blown away.I sold my first Walker reference while i was doing all this listening,regretted it,bought another,and now i am a happy camper again.I am a tube freak too,but there is something about this Walker phonostage that is very satisfying.Now mind you,i did say i have`nt heard them all.
