I'm going to dare posit that DCA's Tower is, in all avenues except its outdoor queue and surroundings, superior to every other version of the ride built. It loses some presence in the park because it's tucked away in the corner and doesn't see the same benefit that MGM's ride has by being the cornerstone of a whole themed area, but the design of the interior of the attraction is in every way better than the original ride.
The basement queue is fantastic, elevating (forgive the pun) the concept borne in Florida to a new level of detail. Where in Florida the ambience was creepy, DCA's Tower feels like it has a legitimate connection to The Twilight Zone, a time and place where those stories were real. The ride itself is a more tightly woven narrative and the elimination of the Fifth Dimension scene really helps it to move along.
In my estimation, that scene suffers from being too slow, too long, with too little to see and much too much of a feeling of safety. It's entirely apparent that you're driving along a floor and the mechanical shaking and vibrations are ignored rather than worked into the story, so it feels then more than any other time, very much like a ride; a mechanical system. DCA's horizontal movement, pulling back away from the elevator doors, is smoother and faster and more disconcerting.
The mirror show scene adds interactivity to the ride that used to exist in Florida's Fifth Dimension scene but no longer works. Moreso, it focuses the riders' attention on something else so that the beginning of the drop sequence comes as a complete surprise.
Even the attraction exit is a bit better, I think. The varied hallways feel more like a hotel to me and that there are, even though we'll never explore them, other paths to take beside the one that goes to the gift shop