Joel Edgerton. That's who Floyd and King both sound like (I mean, exactly, if you've seen Legend of the Guardians: The Owls of Ga'Hoole - he voiced Metal Beak).

And King was meant to be voiced by Joel Edgerton in A&O2 before the budget was cut and they lost their contracts with most of the original or intended cast members.

He's also in Zero Dark Thirty.

Bradley Cooper. Floyd's voice sounds almost identical to Rocket Raccoon.

I should note that another reason I didn't chose any of them is I've never heard of those actors (like with the ones on the poll about Daria).

The other reason, again, is that Joel Edgerton sounds exactly like both of them, especially King, so I see no real reason to change what I thought since I first watched A&O2. King's voice had originally reminded me of Joel Edgerton's performance in Legend of the Guardians: The Owls of Ga'Hoole.

And since King and Floyd are voiced by the same actor, that's why I'd choose Joel Edgerton to voice Floyd was well.