When I read the topic, I thought this was going to be about putting together a "Best of..." from the last 4 albums... so that's what I did!
Dream Theater: Best of 2007-2014
1. In the Presence of Enemies Part 1 9:00
2. Forsaken 5:35
3. On the Backs of Angels 8:42
4. The Enemy Inside 6:17
5. The Looking Glass 4:53
6. Enigma Machine 6:01
7. The Dark Eternal Night 8:53
8. Along for the Ride 4:45
9. Breaking All Illusions 12:25
10. The Shattered Fortress 12:49
Tough to fit it all into one disc, had to cut some important songs (Constant Motion, Count of Tuscany, Illumination Theory). I think it came out pretty good, though. Even if this is my least favorite era of the band, they are still putting out great music!
On topic: I'd say DT12 is the best of the four, then Black Clouds, aDtOe, and lastly SC.