I went over this list http://content.usatoday.com/sportsdata/baseball/mlb/salaries/player/top-25 and tried to think about which ones have worked out. Close to 50% of them have pretty much not worked out already. Another 5 or so worked out okay. A couple worked out well. The rest are players who very recently signed and the outcome is TBD, although a lot of them look promising (Verlander, Felix, Fielder, AGon)