What tubes have you tried with your VTL amps?

[caesar]

What did you like or dislike about each kind of tube?

 

[Theduker]

I have tried winged C SED and tung sol 6550's in MB450 and MB300s.

I can say that tung sol 6550s are awesome, the new ones paired with VTLs have decay that is sublime, and the sound is equal to the very best tube amps available, at any price.