Are they all the same price, or are the blend and "cider" more expensive? If they are all the same price, I'd be inclined to to with the blend. While it is designed as a sweet apple juice without fermenation in mind, it is not from concentrate and probably has a pH closer to what you need for cider making.
If the blend is more expensive, you can also use the basic straight juice as a base and do a gallon or two of the blend. I recently did this with Whole Foods juice. They have a basic unfiltered juice in gallon jugs, and a Gravenstien blend in half gallon sizes. The grav juice is a lot more expensive, but the basic juice's pH is a little high. I blended 3 gallons of the basic juice and 2 of the Grav juice. Ended up with a pH of 3.8 and hopefully a tasty cider!