These are in no particular order:
1. Outcry
2. The Dance of Eternity
3. Far From Heaven
4. Finally Free
I really love Outcry because of it's anthemy-sounding chorus, the guitar is just so powerful, and I love how it pairs up with the orchestral keyboard sounds, which sounds even better when the chorus comes in a second time. It just sounds so uplifting and soulful. The instrumental section is just crazy, and it blew my mind when I first listened to it.
The Dance of Eternity is a very confusing song on first listen, some parts were epic, like the rising shredd-y riff, or the bass solo. Some parts just sounded outright ridiculous, like the ragtime solo, or when the main song theme comes in a second time, but with the guitar as lead, followed by an even wackier sounding atonal riff. I don't know how they managed to fit the bass into that riff either. It's also a blast to play on bass as well. It's like a full arm workout.
Far From Heaven hits me on a personal level, at least the way I interpret it, and will always hold a high place in my top favorite songs ever.
Finally Free is such a catchy and emotional song in general. The chorus is memorable, and the lyrics are memorable. I really love the scene they produced at the end of the song, as if it was being played on a radio. The sound effects they added really make it easy for you to draw a scene in your head of what's going on.
Then: "Open your eyes, Nicholas!"
"DUAH!"