My prog experience:
Genesis - Trespass
Genesis - Selling England by the Pound
King Crimson - In the Court of the Crimson King
King Crimson - Lark's Tongues in Aspic
Marillion - Script for a Jester's Tear
Rush - Hold Your Fire
Dream Theater - Images and Words
Dream Theater - Scenes From a Memory
Porcupine Tree - On the Sunday of Life
Porcupine Tree - The Sky Moves Sideways
Porcupine Tree - Signify
Porcupine Tree - Stupid Dream
Porcupine Tree - Lightbulb Sun
Porcupine Tree - In Absentia
Porcupine Tree - Recordings
Wolverine - The Fervent Dream
Wolverine - The Window Purpose
...and of course if you count Swano's Nightingale, Moontower, and Opeth's output.
None of that old school prog impressed me. Very boring to me. It's like Lost in Translation put to CD, nothing exciting happens.
Dream Theater is just awful. I wanted to like PT a lot. I really did enjoy most of Stupid Dream and a few cuts from LB and Signify, but not enough for me to keep them. Early PT is atrocious. Plus, I sold my PT albums at the height of the Opeth fanboy craze and they sold for $25 each, so I was happy. Wolverine is really the only true prog band that impressed me. And I think this is in part because they use different vocals styles which add depth.
my 2 cents, take is as you will.