There really isn't a right or wrong choice here. Upton's potential ceiling is higher so if he happened to reach it in the 2nd half of the season it could make the difference. Personally I'd probably take the J-Up gamble as I agree with a prior response in that Car-Go takes a slight value hit leading off.
MVP****AL07,AL05,NL04,ALNL03,ALNL02,NL01,ALNL00,AL99,ALNL98,ALNL96 RIP Cammi
Cmon Bud NOW is the time to sack up and force feed an Olympic style drug testing program down Fehr's fat throat and save OUR game from these blatant cheaters!