Invented by Tenkai (real name Teijiro Ishida), this palm is easily seen from certain angles, but, it can allow a much more natural appearance for the magician's hand. Additionally, the Tenkai allows much more freedom in the way of palming and revealing. Which is better? That's for the individual to decide. I'm sure it's debatable, and I won't say... BTW, as 2ndDeal says I seldom palm either and if I do; I use the classic palm (side steal) or a variation of the gambler's cop.
Dom Kabala