Please share your thoughts about this amp. I play all different styles of music and I'm upgrading from a shitty crate gfx 30 that I've had for about 10 years. I've heard great things about this amp but I wanted to see how good the metal tones are. Are they true to the recto series? How is the 4th channel different form the third (is it like the 2nd and 3rd channel of the recto and if so what's the difference b/w those?) Are good lead tones easy to dial in or will I need an pedal for that? Of course, if I had the $ I'd get a Diezel but I can't justify dropping 4k for one of those babies. Any input would be greatly appreciated, thanks!