Ok first off lets make it clear I enjoy(ed) Eckstien and Schumaker both are wonderful players and leadoff men.
The Cardinals have had two amazing leadoff men ( Eckstien and Schumaker) the past 4 years. This is an article that will compare them overall and decide which was(is) a better player overall in their careers.
Skip Schumaker: 2005-Present
Batting average .299
Home runs 11
Runs batted in 68
Schumaker has proven to be a very capable lead-off hitter and a very strong defensive outfielder with an above-average arm.
David Eckstien: 2001-Present
Batting average .284
Runs batted in 312
2x All-Star selection (2005, 2006)
2x World Series Champion (2002, 2006)
2006 World Series MVP
2006 Babe Ruth Award
He is noted for his size, as he is small for a professional sports player at 5' 6". A Plus defender. Clutch hitter and just hard nosed player.
As you can see both these players are just amazing leadoff men, possibly the best in the game today. Their is no telling what Eck could have done if he would have stayed in St.Louis. Of course then we probably wouldn't have Schumaker eathier