Zarrow all the way. I consider myself a move monkey, and nothing comes close to being as undetectable as a good in the hands Zarrow. And while false cuts are good, I feel like aside from up the ladder or something simple like a false swing cut, they just complicate things too much. People aren't used to seeing strange cuts, and it instantly castes doubt on what your doing. The only reason I think that up the ladder isn't disqualified for fanciness, is because it is quite simply one of the most beautiful illusions I've ever seen with cards. Spectators may not be accustomed to it, but it leaves zero doubt in their minds that the cards have been fairly shuffled.