To be honest, I like all of the songs from the EP...
But I like Symphony too. I'll not explain again what it reminds me of, because I just myspace messaged you about it. Lol.
I Have A Gun...I like the vocal melody in that one...and the lyrics are really cool.
Nemesis...it's just cool, generally. Lol.
I, Nepthys...dunno what it is about this one, it's just...quite striking.
Rage...will always remind me of the Rage virus from 28 Days Later, and 28 Weeks Later. Lol. The fast paced, aggressive guitar, and drums...*shrugs*
Isis...you know, I'm gonna stop here. Because I'm just going through them all, and haven't actually answered the question, hahaha.
They all rock...but I wait with baited breath for the new ones.