Here's how I felt about every album that's come out since I became a fan.
ToT - Awesome. Logical direction after SDoIT. Over time, one dimensional, but when in the mood, this album kicks my ass.
8vm - Aside from opener and Panic Attack, I felt this album was a grower, but I now think it's one of the great albums, title track gets better with age.
SC - Loved it for a week or so, then stopped listening to DT completely for about a year and a half (nothing to do with SC itself, just my music tastes at the time.) When I got back into DT in early 2009, I thought it was solid, but had a few low points in the back half of the album before ITPOE pt2.
BC&SL - Loved it immediately, and has become one of my most listened to albums. However, I haven't listened to it in well over 2 years, partially because I know every note. It has its flaws, but I think it was a big improvement over SC.
ADTOE - Also loved it immediately, but due to the new drummer, I was getting used to Mangini. Then I couldn't stop listening to it. I wore out this album big time, where I can't listen to it any more because I know every note. Definitely better than the Portnoy era albums (SC/BCSL) and maybe 8vm.
DT12DT - Maybe it was my head space, but I couldn't listen to this more than 3 times in a month when it came out, then maybe once every 6 months just to give it another shot. At this point, I can appreciate some songs, like the opening quartet of songs, plus I found I can enjoy the album better if I listen to it 2-3 tracks at a time. It might have to do with the production as well (I only have the CD, and a down-mix I found online, might be from the blu-ray edition but I don't think I like that mix either.) Is the HD tracks worth it?
The epic is cool if I'm in the mood. The middle ambient and then orchestral strings section makes me tear up to the point where I just want to start crying. This part alone is more beautiful than anything DT has made before, so beautiful that I can't always listen to it.) But I think the song is a little disjointed, which I don't really think of DT epics.
So DT12DT was pretty disappointing, even 2 years later. JP's tones are not to my liking. Could, again, be the production.