Sadly, I am yet to learn about the music of John Petrucci and Dream Theatre. Perhaps you guys could give me a Top 5 listening list so I can enlighten myself. In the meantime, Fractal Audio recently updated their Axe-FX III firmware to V5.05 which includes new models of the Yellow and Red channels of the JPIIC+ Mesas. And they're a lot of fun! So I dug out the JP15-7 BFR that I have (thank you, Ernie Ball!) and fired them up for some free preset action. Here it is. Download the preset at http://axechange.fractalaudio.com/detail.php?preset=6945 and have fun.