Mike, I was referring to this statement. Sure a showing a double and the revealing a different card can be powerful, but it is hard to create a story with that.
Sure you could build up some story about the physical properties of a card and how a magician can twist and bend them, but why would they care? What are you doing that relates to them?
I've never done a DL then a revelation as an effect. It seems to short and not very climactic. Of course, I'm not doubting that you could come up with an amazing presentation for this, but why not just go with an effect you know will kill, like Twilight Angels?
Really, if you had the option to do a DL/revelation, or Twilight Angels on someone that asks to see some magic, I'm pretty sure you would choose TA.
If not, can you tell me why not? There are so many effects with amazing stories that can be done with a regular deck, so why would you just do a DL and show a different card?
Robert, I'd like to point out what I believe is a flaw in your reasoning.
The hidden assumption you are making in your post is that presentations form the dressing of an effect, but it is the effect which is inherently interesting.
This is, I believe, a fallacy.
Effects are not inherently entertaining. One only has to watch a poorly performed classic to see this - a performance in which sleight of hand may well be up to scratch, but presentation is not.
It is a dangerous assumption to make, not merely because it is not true, but because it ignores more important aspects of creating entertainment.
All entertainment comes down to the entertainer themselves. A sloppy triumph in and of itself has no story, no plot, no action and no connection either. And these things don't just come from effects. They are not inherent in effects - they come from presentation, and furthermore from the performer. Christopher is right - why would the audience care any more about angels moving than a card changing? Well, they would only care for angels moving for the same reason that they might care for a card changing - because the effect has been given meaning. Because of the presentation. Because of a genuine, likable performer. These are reasons to care.
I suspect that you know these things. You hinted as much with your final paragraph - yes, there are many tricks
with amazing stories. Do the amazing stories come with the trick? No, they don't! They are imposed presentations. At the heart of the effect of Twilight Angels is a naked mutant child that moves. That's it. There's no more story to that than a card that changes. But once you bring out its potential to create meaning, then you have a good trick. You are judging effects unfairly by comparing a DL trick with no presentation to a trick with a good presentation. You are also judging an effect ("It seems to short and not very climactic") based on a bad presentation you imposed on it.
Give an effect meaning, and it will be more powerful than one without.