Are you talking about the Vertigo Hackysack from the Trilogy? Because the original Vertigo is very easy, but the Hackysack is hard to get 100% of the time. I use my 1800s, but I think any flat, crisp deck works well. If the deck has a lot of visible crimps, then the cards will fly everywhere when you try to pop it up with your foot because they will simpy refuse to stay together.
Good luck!