I've just deleted an overlong post responding to Peter's point, but I don't want to be boring so I'll just say: I think that's a little unfair, even the best magician occasionally comes across a card grabbing, sport-spoiling numpty

Sure, it'll happen less with experience and confidence, but it happens to everyone at some point.
Any road up - IDs vs. Brainwaves... I was sure I'd posted in this?! It seems not. I'd go for the ID, for two main reasons:
1) Easier! No card counting or m***ing!
2) The routine builds, and has an appropriate climax. There's suspense as they see one card face down... sub-climax... and then, pow, the revelation. And it's their card. Compared to the brainwave which gives the game away immediately - oh, that's my card face up - and then a climax which is arguably less powerful in terms of the back colour. I think the revelation of a specific card is stronger than revealing the colour-changed back, which feels like a bit of an add on.
Oh, wait, I'll add -
3) ID is more appropriate for an out, because it doesn't have to be an effect it itself, it's a little more subtle.
I do however use the Sankey-modified ID, with big black Xs on one side, so depending on what they choose the card is either the only card with or the only card without a fat black X on it. This negates the idea that it was achieved by sleight of hand, and if you've seen someone good at culling, that's entirely possible!
