Anderson is considered by just about every scout in baseball to be a guy that will hit .280-.290 with 20-30 homers, very few steals, and approx. gold-glove defense every year for many years. I have no problem with keeping the safer pick as far a center field goes. There aren't a whole lot of consistent .280/25hr centerfielders with out there with gold-glove caliber defense.
Chris Young could be Mike Cameron. Is he a safe bet to be Mike Cameron? No. Not even Mike Cameron is a safe bet to be Mike Cameron from year to year. Once in a while, Cameron will hit .270 with 25 homers and steal 35 bases. Other years, he'll hit .230. Young's going to be the same way with his approach at the plate. What's Young's realistic ceiling for sustained production? .265/30/30 with very good (but not Anderson) defense, approximately.
Screw rolling the dice and maybe getting that. Gimme Anderson. I agree with propellerheads on steals. They're overrated as hell. Most big-time base stealers are big-time causers of outs on the basepaths. He may be amazing for fantasy managers and get drafted each year in the third or fourth round, but he'll be less valuable to a real team.