Came here in echo the sentiments about Transatlantic's Bridge Across Forever, as well as The Whirlwind. I've been deep into TA lately since the release of The Absolute Universe, and while I love the new album a lot, their 2nd and 3rd albums are pretty perfect in my eyes/ears.
As for other bands, I'd say for Rush, I'd say that Moving Pictures is the typical answer, but I'll also say Power Windows (maybe I am biased?
), but other than those two, I'd say Hemispheres is pretty close as well.
Dream Theater's Six Degrees Of Inner Turbulence is my first pick, but I'd also say Images & Words fits the bill as well. Every other album of theirs has at least one track that is slightly-less-than-great for me.
Going through my other favorite bands, I'd say Spock's Beard's Beware Of Darkness is great through and through, as well as X.
Big Big Train's The Underfall Yard is pretty great, though I'd also say English Electric Full Power is up there, I cannot think of a single less-than-great track on that double album.
And speaking of double albums, I'm tempted to say one of my favorite TFK albums would fit here, but I feel like each of them has at least a couple tracks that aren't so great, though if one was close, I'd say it would be Stardust We Are. It works best as a whole, but going at it track by track in isolation, there may be a couple tracks that aren't so great, but the album flows together so well.
-Marc.