I got it.
Maybe it's just a first impression but I feel it's one of the best purchases I ever made.
So if you are on the fence, go for it.
All the profiles sound great, warm, never harsh and you can tell it was done by a pro.
The Marshall is amazing, many profiles with a variac from 64Vac all the way to 117Vac.
The Princeton sounds so warm and so big it's like a dream.
I can't comment on the Matchless because it's not my kind of an amp.
My guitar is a Historic Les Paul R0 with low output pickups and I am in vintage tone heaven right now.