It's going to basically depend on your lifestyle. Are you home during the day during peak demand or only at home at night and on weekends? That sort of thing
San Diego, as I recall, has the highest electrical rates in California. I just did a quick Google search and found this:
"This average (residential) electricity rate in San Diego is 6.58% greater than the California average rate of 15.34¢/kWh. The average (residential) electricity rate in San Diego is 37.63% greater than the national average rate of 11.88¢/kWh. Residential rates in the U.S. range from 8.37¢/kWh to 37.34¢/kWh".
We have SCE (Southern California Edison) and when I had my solar panels installed I was under the Tiered plan. After one year, I switched to TOU for a year because they indicated it would save me money. It may have on the monthly rate, but under TOU I had to pay more each month ($10 -$15 as I recall) for grid charges and other fees. I finally switched back to Tiered and the main reason was that all new Solar Customers are now required to use TOU Rates, while older customers had the choice. I figured if they are forcing customers to TOU it is to the utility's benefit, so I went back to Tiered