Our SBNation colleague John Sickels presents his Top 20 prospects for all teams and recently he covered the Marlins.
As expected Mike Stanton is the Marlins top prospect.
Here is some of what he had to say about him.
Beginning with the hitters, you have Mike Stanton, who has the tools to be a superstar but also has the potential to crash and burn badly if he's rushed too fast. He needs another 300 at-bats in Double-A, and 400 in Triple-A, before being pushed to the majors. He has All-Star upside, but he still has flaws in his game that could prevent his talent from fully coming through if he's not handled properly.
Got to say I agree with this in that rushing him to majors could be disastrous to his career.
Give the article a look see, if you are interested in the Marlins top farm hands. If you are really interested, buy John's book: The Baseball Prospect Book 2010 where he goes into more detail. It is one of the best books at ranking the prospects around, I buy it and you should too.