Good Devano Deck:
1. Gaffed block not too thick.
2. Weight sufficient to raise the cards at an even pace, even when the deck is tilted slightly as it might be in a glass or if the spectator is holding it.
3. Pins, not stucky stuff, to raise the cards. The pins should be just long enough that if you squeeze the deck very tightly, they will bring a double card up.
4. Smooth operation--a smooth and magical rise.
That's what the Genii is looking for, and I have it in an orignal Devano Deck, but it's made of bridge size Waddington's cards which are out of place in my hands.
Jim, if you want to examine my original (made by Mitch Devano) just let me know.