Soriano & Carlos Lee
Did you realize that Lee and Soriano have the exact same career OPS (.835) and that Soriano is 6 months OLDER than Carlos Lee? Yet, I'd be willing to be that Soriano ends up getting more money and more years than Lee. I guess the stolen bases are worth what will likely be a 5MM/year difference in their salaries...
Games are won on run differential -- scoring more than your opponent. Runs are runs, scored or prevented they all count the same. Worry about scoring more and allowing fewer, not which positions contribute to which side of the equation or how "consistent" you are at your current level of performance.