Pretty much all the recent albums have well placed first tracks for this, since they are amazing openers to concerts as well.
The Glass Prison, As I Am, The Root Of All Evil and A Nightmare To Remember have all been mentioned. I'm not sure which one I prefer most of all, maybe The Glass Prison.
Systematic Chaos is a weak link in that since it starts and ends with In The Presence Of Enemies, and I'd prefer to see that in full at the end. Constant Motion is an OK opener since it gets straight into it which can also be good, but not quite the same as the other 4 with their buildups.