Amplifiers:A Keeper for Life. Do you know of one ?

I have had Mark Levinson 33H & 33
EDGE Signature 1.1
Levinson 436's
Pass Labs X250
Conrad Johnson Premier 12 & Premier 8A
Parasound JC 1's

All of the amps above where great amps, but none IMHO capture the timbre, emotion and perfomance like the VAC.