Returning to Pokemon, should I get X/Y or OR/AS?

[fleischr]

Returning to Pokemon, should I get X/Y or OR/AS?

I personally haven't played a Pokemon game since Red/Blue/Yellow. I think my wife played Gold/Silver.

Just got a 2DS, and I'll get one for my wife soon probably. And I want the best Pokemon experience to come back to after a loooong absence.