FORMER Executive and Legislative Councillor Rita Fan Hsu Lai-tai remains the most credible member of the Preliminary Working Committee while tycoon Li Ka-shing overtakes her as the panel's most capable member, according to a survey. Commissioned by the Overseas Chinese Daily News, the survey also found that David Chu Yulin remained the least credible and least capable among the 30 Hong Kong panel members. Among the most credible and most capable members rated by the 794 respondents were Leung Chun-ying, David Li Kwok-po and Tam Yiu-Chung.