Does anyone know the difference between The Panache and Panachee Fig Tree/ Tiger? I'm trying decide on which tree to buy. But I noticed the leaves are different in color and texture.

there should be no difference between Panache and Panachee.  It is a different spelling for the same tree.  There are two different "Tiger" trees.  One is simply 'Tiger' the other is 'LSU Tiger'.  The former is a synonym for Panache. 

Thank you. The leaves though are different, one is darker and sandpaper like to the touch while the other is a brighter green. Any help there? 

Panache / Panachee / Tiger will have variegated leaves and bark.  It was recently the Fig of the Day (see here).

What is the best soil for it to grow in? Should I re-pot it after buying it and in the same size pot or larger? 

3 kinds Jolly Tiger too

If you search the forum, there is a wealth of information on growing trees in containers.  There is no "best" growing mix.  Any/all are full of compromises.  Consequently, what works best for me and my growing habits may not be what is best for your situation.