>>26511064Get ORAS if you want to catch legendaries and have all of the new mega stones. Get XY if you want character customization, and the new pokemon introduced that gen.
Personally between the two I think XY is more fun to play. There are more pokemon to play with in the main story and the region is much more interesting and fun to look at, imo.
Based on that, I'd say get XY if you like to play around for fun, and get ORAS if you're looking to get into competitive asap, as it has the best tools available for competitive, like the dexnav and move tutor. Yet this will all be outdated when S/M rolls around in november anyways.