i have to say that the illusion is quite a fun puzzle. although it is just solve one side and pair 4 edges, it is quite an interesting puzzle. its actually 'harder' because you arent matching colors. so you have to think a little bit and lookahead gets kinda tricky. the dazzler on the other hand, i dont know that this bring much more to the table. my dazzler, however, is broken in nicely and i can solve the centers and edge pairing on it faster than i can with my other 7x7s. i like the feel of the stickered 7x7 better, because you know how vcube is with their lube is crazy! and then you have nothing that gives a 'grip' to the surface! ahahah