They look like Rider Backs, without actually saying it on the box. I would personally get the ones that you pictured over the "Standard" Index, but it also depends if those were made in Kentucky, or Ohio. If you find any cards that were made in Ohio, those would be the better cards to use. Otherwise, they're most likely the same cards, just inside a different labeled box ("Standard" vs "Playing Cards") I personally don't use Bicycles very much, and I'd suggest just picking up a brick of Tally-Ho's, Monarchs, or Blue/Red/Green Crowns for magic/cardistry.