I purchased both the Quantum Deck and they share the similar problem. Some of the cards stick
together very well but some don't, especially when dealing face-down. I've been practicing for hours
trying to apply forces in different ways but can't completely mitigate this problem. I also found
the tutorials missing any explanation on how to perfectly deal two cards together. It seemed so easy
in the videos.
This is a big issue for close-up setup when audiences are watching closely.
They can spot it pretty easily. For that reason with the deck I received, it's not useful as a
close-up effect. Not sure if it's a quality assurance issue where some of the decks were produced
worse than others.
I like the concept and design of the website. It's pity I can't use this
for close-up.