I've played through a few of them..... you will have to forgive me but I don't remember the model #'s.
Overall I think they are very well made and they sound really good. One that I played threw was an 18W I think and it sounded awesome once cranked and the volume was exceptable.
I have a buddy that has the Twinverb (I think thats what its called). Channel switching aTwin and a Marshall...... How could that be bad!