Here are some highlights from our San Francisco 49ers chat, held Thursday:Jeff: Does V McDonald look significantly better than D Carrier?Bill Williamson: Different types of players. McDonald is probably the more talented, complete player. Carrier can run, though. He is still a project.DK from VA.: How is Chris Cook looking? We went to high school together by the wayBW: The 49ers like his size and how he's looked. He will get good coaching.