The black and white nature of some of these posts is crazy. Each guy does things. Each guy is poor at some things.
As of now, I think Prey is more serviceable especially since we don't need him to score. Hopefully if he is here next year, he gives something on the offense end.
I think that Vince is a work in progress. He is a presence, but often seems a out our of sync and sorts.
Each guy I think warrants limited situational minutes. If I had to pick one for extended play this year, if needed, it would be Prey. But I would not write Vince off for the future.