Talking about "sides" with albums that came out in 1988 or later is a bit tough (that's when I stopped buying LPs or cassettes), so with DT, you end up looking for an arbitrary "first half" and "second half."
If you assume that the break in I&W is between Surrounded and Metropolis, then I&W would definitely fit the bill. I think DT's subsequent albums have been too long to think of in terms of "sides." For example, if FII, had been released on vinyl (maybe it was; I don't know), it would have to have been a double album, right?
I came in here to say this - Using the term "sides" in context to albums that were originally released on CD is a bit difficult. Some bands didn't think about music in terms of sides after CDs became mainstream, and if they did, it was because a vinyl release came out as well.
In today's world of vinyl-resurgence, it's possible many modern albums (in the last ten years) have vinyls where track order was created with the vinyl format in mind again, but for most 60+ minute albums, these tend to be double vinyl albums, so "side B" is just one side of 3 or 4, which isn't what we're really discussing here.
Titling the topic "Albums where the 2nd half is stronger" would be more apt to cover all bases, both CD and Vinyl, or even Cassette.
In the case of Dream Theater albums after IAW, we've gotten vinyls for nearly all of them, I believe, including the above mentioned
Falling Into Infinity, all of which were double vinyl sets.
-Marc.