I own the invisible, and I think it's a bit easyer, because IF you make a mistake, wich ofcourse chouldn't happen (but hey, we're all human huh) it's easyer to quickly erase your mistake, because they dont see the card face immediatly. With the brainwave, if the card face is there, it's there, if it is the wrong card, you messed it up quiet a little. Well, that's what I think of it ofcourse. But is is a pitty that both of them lose r******ss very quickly, but hey, that's where we have the spray for isn't it
