Suarez has put up good defense most of his career and this year he appears to be fine. To me he seems like the most obvious addition. I hope we get him.
He might be having the greatest season he will ever have. He wouldn't be the first player to do that in his age-23 season. However, his floor is like a 3-4 war player as long as he gets 600 PA. If he hits, he's a HOF player.