Well, this topic is pretty much what motivated me to make a ranking of all the studio DT tracks, and while I'm still working on it, I've encountered a LOT of my own controversial opinions: I enjoy quite a few Falling Into Infinity songs that are considered simple/radio-friendly, Burning My Soul for instance. On the other hand, Trial of Tears is one of my least favorite 10+ minute songs by Dream Theater. I absolutely love Images and Words, but the album followed by it known as Awake by the exact same line-up is a big step down for me. Now that we're talking about controversial album opinions: A Dramatic Turn of Events, definitely in my top 5 if not top 3, I love most of the songs on there, except for two or three. I am more of a metal guy, and don't get me wrong, I love some of the mellow Dream Theater songs, but The Spirit Carries On never grew on me to this day. Also, about the instrumental section, Erotomania and Hell's Kitchen are in my opinion worse than Enigma Machine. And finally, epics, while this is way shorter than the 20 minute epics, Breaking All Illusions probably beats Octavarium, Count of Tuscany, ITPOE and Illumination Theory in my opinion.