Hi there, i 've always wanted to practice dice switches since i saw Steve Forte's GPS. Now i'm ready to buy the Jason England 1 on 1 on dice switches but i have a questions for those who already switch dice, Which are better the 19mm or the 16mm dice set? I've seen in magic and gambling stores these 2 measures but i don't know which ones are the most common for these kind of gambling demos? I guess that size of hands has to do a lot with the kind of dice, i'm 6 f, 3" and i have a pair of hands in accordance with my height, big hands but not as big as Jason England's hands. Thank you for your answers in advance.