Cabo San Lucas has everything for the active tourist or resident. It has shopping, nightlife, boating, fishing and great beaches. Many golf courses are there or under development. It looks and feels much like an American tourist town. Prices of real estate and meals are higher here than just about anywhere in Mexico.
San Jose del Cabo is more laid back and traditional than San Lucas. It is 18 miles east of San Lucas, and the town center is a few blocks away from the waterfront. A nice main street and quieter surroundings are San Jose's attractions. It has lots of restaurants too, and many nice housing developments.
East Cape is the area East and North of San Jose del Cabo. Much of it's area is accessible only by dirt road at the present time. It has all the fabulous beaches of the lower cape and practically no people.