when recording metal, it is usual to record 4 guitars. (one panned each way) to get a fatter sound. using two different amps sounds cool, but when using one, I sometimes get this problem with a chorus sounding guitartrack. I pan each of the different (sentralizers), but my quiestion is really: do you invert the phase on two of them? And how are your experience with using two different amps (or more)?