That is a loaded question. The following sites offer their opinions: NPR (short biographies and relevant links); USA Today (short bios and mention of New Jersey Senator Corey Booker); New York Times (bios and photos); Politico (bios of fewer candidates); and The Washington Post (that lists only one candidate who appears on all the lists); and SCOTUSblog has comprehensive coverage. The one name that appears always: Srikanth Srinivasan. Articles about him can be found in Mother Jones and The New Yorker; his legal opinions are online as well.
Who Will Replace Justice Scalia?