My biggest problem with the Berroa option is that he is not that much better statistically right now than Jimmy Rollins (yeah I know, he blows in fantasy)...
The numbers though:
.288 17/73 92 R 21 SB
.263 8/62 85 R 20 SB
Rollins is the last or next to last starting SS likely to go in a 12 team mixed-league draft, which means he is late round trash. Berroa certainly could improve on his numbers, but he could also have a sophomore tailoff to a certain degree or stay the same. However it breaks for Berroa, from a draft strategy point of view I rather take Sweeney off the board right now and live with either Berroa a lot later or Rollins towards the end rounds of the draft.