Which tour should I go on in San Diego? I have 2 options to choose ...

I've been to the Coronado Hotel (which has a view of the ocean), La Jolla has ritzy and eclectic stores and is safe to walk through, Hortons Plaza is a large, outdoor shopping mall and the Art Deco Shopping Mall is full of different, ... The second tour sounds too short too see all that is listed and the Convention Center isn't really that interesting. The Gaslamp Quarter is a must see but I think that you won't have enough time to enjoy it during the short tour time they ...