Yesterday, Baseball Prospectus released part one of their 2010 organizational rankings. Part one features teams 16-30 and part two to be released either today or in the near future features 1-15. The Reds will be ranked somewhere in the top 15 as they weren't on yesterday's list. I'll be sure to post the Reds ranking when it's released.
By the way, they ranked the Cardinals system as the worst in baseball, with the Astros at 28 and the Brewers at 25.