Hey, lets start a flame war!! I think that there are some magic tricks that are not just subjectively bad but actually an objectively bad idea. For me it is the PK stopping time. I think that the manufacturers of PK rings/wrist blocks/etc deserve to get sued for their continued insistence on advertising this effect. These days many people who wear mechanicals are wearing decent mechanicals. The average cost of my collection of mechanicals is around $500 dollars--these I would consider cheep. If some street magician made a grab for my wrist while I was wearing my Tissot, I would probably punch him in the face.