My copy of the Cubax is made of Maple and Paduak while the Rastaban is fashioned out of Acacia, Maple, Wenge and Paduak. Nice colour contrast for the latter.
Both are interlocking puzzles comprising of burr pieces forming their respective shapes. While they look physically very different, I personally found the solve for both puzzles somewhat similar in terms of how the pieces moved and came apart.
The Cubax has 13 pieces with 16 moves while the Rastaban has 9 but needs 15 moves. The Rastaban is in my view a tad harder. But neither is unduly difficult; recommended for those new to burrs or non-burrist (like me). The moves are also quite easy to remember and the different colours do help.
Beautiful puzzles and great value for money! Should you opt for either or both? Well, really no need to think...as a good and proper puzzler, getting both is a must!