Which one do you guys think is better?
Ask yourself which fits YOUR style. Which one represents YOUR vision of how you want YOUR magic to come across to your spectator(s). You, I, and anyone else could buy one of either product and although the method is exactly the same, the effect is going to come off differently.
The effect doesn't make the magician, the magician makes the effect.
Smoke by Alan Rorrison is the less technical out of the two, but that means you're going to have to create the miracle in your story telling abilities. Where as
Regeneration by Blake Vogt will require a bit more skill and preparation.
Find out what fits YOU.
Good luck.
Regards,
NG.