Yes, Daniel's Torn effect is very effective ... fooled me badly first time I saw it.. but Mathieu Bich's TnR is I think, the best of the lot.. it's very ingenious i must say
If you want to end cleanly and very nicely (hand the card out for inspection afterwards), and still get a great reaction, then it's Daniel's effect. But if you want to have an explosive reaction from your laymen, especially when you're showing it in front of say 5 to 10 people, then I would recommend TnR by Mathieu Bich... the effect is wholly unexpected by them and they will WOW you at the end of it... Currently, this effect is my favourite
All depends.. I suggest you get all three - Huron's effect is also sick !
I can't say too specifically for exposure reasons, but at the end of TnR the spectator is inspecting whatever card it is that they chose. You do end slightly dirty but its nothing you can't easily get rid of with some well timed misdirection.
Well there is a method that can be done to end TnR neatly. It's similar to the one used in WH's Distortion, so yes, I don't see why the 'card' can't be handed out to the spectators for inspection after restoration//change