Saifa
Saifa is the shortest kata of Goju Ryu but it is not easy at all.  The students start practicing this kata when they already know all the basic stances, blocks, punches and kicks to be able to jump to a different category of kata techniques.  Saifa demands more control over every single movement, stances, punches, kicks and balance at the same time coordination.  Once the student starts working this kata he will feel the change of the karate techniques that demands much more work, attention and understanding of him and the kata.
Geki Sai dai Ni 
This is the second Kata that looks to be a variation of Geki Sai Dai Ichi but it is not.  The mentality of this kata is different. It works with open hand techniques that passes from a single block as in Geki Sai Dai Ichi to  the control of the attacker arms it also introduces Neko Achi Dachi stance which is more difficult to execute than the previous learned stances.  With this Kata the student can increase his defense and counter attack. 
Geki Sai dai Ichi
This is the first kata that every white belt needs to learn.  This kata has all basic defences and attacks needed to defend themselves and defeat an agresive attack. 
Seipai
This kata demands all the spirit to execute it.  Mastering this kata is a very hard effort but once you learn it you will keep practicing for ever to look for a good execusion.
This Kata here below are performed by Japanese .
Saifa
Seipai
Sanchin
Tensho