well, i had few of thoose players mention, however since i have a bad nast habit of losing, i dont give it time to see how the seasons goes for me, but one player that i really like that has done well for me, is Halsey, a good killer for shea teams i find.
I've got him as a backup in Wrigley - over my first 30 games he's had only 24 ABs, but has 2 dingers, 6 RBI and a steal! He's only hitting .167 with an OBP of only .259, but his slugging is at .458! Not what I expected when I got him as a multi-positional defensive replacement.