I am a Photographer here in Los Cabos and I also write restaurant reviews for Los Cabos Magazine so I have a bit of the inside track. La Panga is an excellent choice for your RD. Expensive and worth it. Here is a list of some more casual (read less expensive) restaurants in San Jose. Of the ones I have listed I would recommend La Dolce-casual, fun, Italian and Zippers beach bar (yes RIGHT ON the beach) for burgers and stuff.
Here is the link to find these and other restaurants.
La Dolce Italian Restaurant
Known for daily fresh pastas and traditional Italian pizzas. Full bar. Corner of Hidalgo and Zaragoza on the main square. Ph: 142-6621, 142-6622. sladolce@1cabonet. com.mx Daily 2pm-11pm. L, D - MC, VS
La Bodega Steak and wine house
Offering a Mexican contemporary option, counts with a great selection of domestic and imported liquors and a controlled temperature wine in San Jose del Cabo, Los Cabos. Phone: 624-14-26619
Baan Thai Pan Asian Restaurant and Bar
Delicious Pacific Rim cuisine. Fresh exotic flavors to satisfy your every taste. Featuring an eclectic menu of dishes from Indonesia, Thailand, Laos, and China, using fresh ingredients and herbs. Good range of domestic and imported wines. Morelos between Obregón and Comonfort, downtown. Ph: 142-3344. Open daily 12pm-10:30pm. L, D, S - MC, VS
Havana Bar and Restaurant
Restaurant bar, international cuisine, live jazz music everynight, starting at 7:30 pm. Costa Azul Km. 29 Transp. Hwy. Ph:142-2603, Mon-Sat, starting at 5:30pm. L, D
Zipper’s Bar and Grill
Beachfront dining on Costa Azul Beach. Mesquite grilled steaks, ribs, seafood, sandwiches, burgers, sports bar and live music on weekends. Costa Azul Beach, Km. 28. 5, Transp. Hwy. Daily 11am-11pm, Fri and Sat until we close. L, D, S-$