One is a series of different moves you execute together, you kinda have to be "in the know" for this handshake.
Another is a kiss of your hand.
The third is a normal handshake and the least desirable as Itemus has an iron grip and there is some risk of injury involved. If you don't know the steps to the first and value the use of your hand when offered the third, I'd advise opting for the second in all instances. Plus, it's so gallant!