Called DGEMesa Boogie Mark
I found one Pete Turley MarkIII coliseum, mixed with a Tills Recto Cab, and earmatched the tone to a Petrucci isolated track I had on my computer (Metallica rythmic part of song Constant Motion).
Sounds great to me.
Pete, interesting point :
Through my gear the MarkIII profiles sound too harsh for me with my Musicman Petrucci.
Perhaps it comes from the unidyne SM57 ? Perhaps were they refined with singlecoil guitar (apparently, according to TylerHB, guitar used in refining is also important) ?
The last profiles you did are very good, very 3D sounding, and his profiles of Recto sound also awesome (cabs are on par with Tills on this amp).
Perhaps it could be interested to hear new profiles of the MarkIII as from what I hear you have a lot improved your miking/profiling techniques 
My 2 cents
Djemass
