I know I'm probably biased on this matter, but I thought last year that Motlop might've passed Cyril and I think Motlop's last 4 or so weeks have pushed him over the top. He's a much more consistent player than Rioli, which is why I have to go with him.
If I were taking one all things considered I'd take Motlop because of age and injuries but IMO Cyril is the better player.
Rioli is a better player but I'd take Motlop. Has a more defined roled and just seems to deliver more often. Plus the finger twirl is the greatest celebration I've seen in a while.