Marshall Valvestate
I saw a video of Judas Priest in the studio- no valve states in the studio, but they did use some type of modeling rig to get more consistent tone between studio, tour, and no tube amp breakdown.
I had a VS100 for 6 years, until I got suckered into the while "solid state sucks, tubes rule" mentality. It served me well for many years, but the clean channel was just too bright, I couldn't get dirt pedals to sound good through it