I highly recommend riding each one yourself, maybe find them in a demo fleet at a boardshop.
Ride Control: Directional shape will make it a little better at the freeride than freestyling in the park. The sidecut is radial, which is a bit more traditional, but still very nice on groomers.
Ride Society: Twin shape, allowing easier switch riding/landing. Will a bit harder to carve, but will behave better in the park.
K2 Darkstar, Twin shape, may be a bit harder to carve. Has a very light core and low swing weight making this a great board for doing spins off of jumps, both in and out of the park.
It all comes down to your preferences. I think that you will be happy with any of the above as they are all great quality and will serve the purpose you are looking for.
If you are looking for me to tell you which board to buy...I would probably say K2 Darkstar, it seems to have some pretty good technologies, and I really like the sidecut combined with the twin shape for freeride/freestyle.