With the entire upper concourse located well above floor level, all fans considering 300 level tickets are encouraged to aim for seats in the lowest row possible. This will keep you out of the nosebleeds and also closer to the section entrance located at row 2.
All upper level corner sections at the Staples Center have pretty good sightlines towards the court. So when choosing a section, aim for the lowest row that matches your budget. Also, consider that the farther away from center court you are, the higher the likelihood that the basket might slightly affect your view.
Some of the best popular food selections in the upper concourse are located in the corners near sections 330-333 and 313-316. These include a McDonald's, a Wetzel's Pretzels and a few cocktail bars. Sitting closer to these sections will shorten the walk from your seats to the concessions.