Ask Joe Satriani, Steve Vai, John Petrucci. Sometimes I have to laugh at the purists out there. Ultimately what any pro guitarist wants is for the sound of his/her guitar to sound great through the front-of-house sound system. It makes no difference what you do to your amp, it will only sound as good as your pick-ups and your guitar...AND THE GUY SITTING AT THE BOARD. In a nutshell, if you like digital effects, use them. Keep in mind, the entire Boston album was recorded with totally solid state amps built by the band's originator. Everybody loved it and nobody at the time knew, or cared.