The other guitarist in my band plays through a Marshall Combo (not sure about the model, but it was around $600 new, pretty sure it's a modeling amp, and has one preamp tube) puts a Digitech Death Metal Pedal in front, and is convinced that his tone is better than anything he's ever played. We've tested out the Dual Recs at our local music store at least a half a dozen times and after 10 minutes of dialing it in he gives up and is convinced that his $60 Digitech Death Metal has a better distortion than the Dual's Channel 3 Modern Setting cranked. I've fallen completely in love with the modern mode, but he remains unswayed. What should I tell him to convince him otherwise?