I have heard back and forth that a sustain pedal is needed and then others say it is not good to have. I play hard rock/metal. Dropped C tuning, Jackson guitar with Seymour Duncan Blackouts. I got a Crate half-stack, Line6 X3 Live and a Digitech distortion. I hear that a compressor/sustainer will give me better palm mutes and pinch harmonics. What's accurate?! Stupid double-talk....