I'm going to pick this up on the PS3, I think. Even though I have a few AC games on Steam, I tend to play them more often on consoles. Will put together a living room PC / Steam Machine-type thing in a few years that'll supersede my consoles, but for now it's easier to just get it on the PS3.
Can I flog my PS4 upgrade code, as I have no intention of buying a PS4? I heard that you need to put in a PS3 disc in your PS4 to activate the upgrade, but I don't know how that works. Does it have to be the same disc, or will any copy of the game do? Do you need the disc in all the time after that, or is it a one-time thing?