MESSAGE FROM THE AUTHOR: If you comment, keep it kosher. If you disagree, articulate a respectful and thoughtful opposing idea. No profanity necessary. We're just talking guitars.
Modulation is a pristine effect. It’s subtle, not overly aggressive and best employed when it doesn’t substantially alter your raw guitar tone.
Distortion is different.
While often loud and aggressive, distortion warps your signal, completely changing the demeanor of your sound.