One of the best melodic trance albums ever made in my opinion. All tracks are great except "Sub-Atomica" which is "just" good. The tracks are quite different in style too but still manages to maintain that Chi-A.D touch. Beautiful, atmospheric, epic all the way through.
I can't pic a favourite out of these, so I'll name three that I especially like...
Beyond The Singularity - Awesome track, great atmosphere
Eye Am The I - The perfect dance floor track
Animatrix/The Flame - Great build-up and amazing melodies

Track 3 Celestial in any case make this album worth any and more of it's pennies. Everything in this track is perfect. The build-up long and patient, repetitive and dark, and with tons of stuff going on when it hits you ... the most wicked out of this world lead melody at 2:17. The first time I heard this, it was like, Whou! Have I heard this before? Maybe I have but I'll never get it out of my brain now!