I wouldn't bother getting both if I was you - they are very similar to each other. I used to have Die Cipher but got rid of it. Super Sight is very similar to an effect that I have, called "Mystic Chips", except you only put one colour chip into the container, which the magi has to determine, as oppose to Super Sight where you put 4 in and the magi has to determine which one the spec kept for themself.
There's also a prop called Cipher Sticks (a.k.a. magic/magician (?) wands) , which again, works on a similar principle

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As Darrel pointed out - if you do get Super Sight, just make sure that the lid is screwed on tight before you "examine" it. This is not an issue with the Die Cipher, as the lid just sits on top

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