Dunno.. I love so many songs..
Here's a general list of the ones I've listened to a lot..
The Human Abstract (Midheaven) "Metanoia", "A Violent Strike", "Counting down the days", "A Dead World at Sunrise"
The Human Abstract (Nocturne) "Mea Culpa", "Polaris", "Nocturne", "Harbinger", "Crossing the Rubicon"
The Human Abstract (Digital Veil) "Digital Veil", "Complex Terms", "Horizon to Zenith", "Faust"
All That Remains (The Fall of Ideals) everything..
All That Remains (Overcome) everything..
All That Remains (This Darkened Heart) everything..
All That Remains (For We Are Many) almost everything..
As I Lay Dying (The Powerless Rise) "Anodyne Sea", "Anger and Apathy", "Upside Down Kingdom", "The Blinding of False Light"
As I Lay Dying (Awakened) "A Greater Foundation", "Resilience", "Whispering Silence", "Wasted Words", "Overcome", "Defender"
As I Lay Dying (An Ocean Between Us) "An Ocean Between Us", "The Sound of Truth", "Forsaken", "Wrath Upon Ourselves", "Nothing Left"
As I Lay Dying (Shadows Are Security) "Empty Hearts", "The Darkest Nights", "Illusions", "Through Struggle", "Confined"
The Butterfly Effect (All) "The Way", "7 days", "Signs", "Take it Away"
Between (The Buried And Me (Colors) "Prequel to the Sequel", "Informal Gluttony", "White Walls"
With Passion (In the Midst of Blooded Soil) "Darkness Doth Bring Mortality", "Trainwreck Orchestra", "Forlorn Hope"
Parkway Drive (Horizons) "The Sirens Song", "Carrion", "Five Months", "Boneyards", "Frostbite", "Idols and Anchors", "Horizons"
Parkway Drive (Killing with a Smile) "Romance is Dead", "Smoke 'em if you got 'em", "Picture Perfect, Pathetic", "Pandora"
Parkway Drive (Deep Blue) "UnRest", "Sleepwalker", "Samsara", "Leviathan I"
Parkway Drive (Don't Close your Eyes) "The Cruise", "Flesh Bones and Weakness", "Don't Close your Eyes"
Other mentionable bands..
Blood Stained Child
In Vain
Mastodon
Dream Theater
Bullet for my Valentine
Lacuna Coil