I have been comparing tube amps using my Tribute as the test instrument. I have tried the Mesa Mark IV, Rectifier Single and Triple, and a used DC-10. Of Fender, I have tried the Reverb Pro, King, Blues Jr, and Vibro King custom. With Marshal, I don't remember what I tried, but it was higher end and I didn't jive with it too much.
To my surprise, based on what I've read here, I simply liked the sound of the Fenders better than the Mesa equipment. The sounds I was looking for were basically summed up by three sounds: 1) Clean jazzy tone 2) Garcia Althea tone 3) Reggae tone akin to say Black Uhuru Chill Out era.
Perhaps it's the style of music that I like to play, or the sound that I am used to as we have a Fender amp in the house already, but I found the Fenders to have a better punch, better clean and less processed tone to my ear.
My ears may be no good, and I guess all this is very subjective, but I'm wondering if other Alembic guitar players have a clear preference (I know Bill likes Mesa Mark III's). Perhaps I just didn't know enough about how to shape the tones on the Mesa. What I did really like about the Mesa is the ability to set up 5 separate tones activated by footswitch. That was really handy.
I'm going to go back and try the Mesa vs. Fender stuff again and will spend more time at this comparison before I make the purchase. I spent about 45 minutes with the Mark IV so far and I think I will go with a combo.
Andrew