If you live in San Diego, you have easy access, distance-wise, to many local bike shops. Just go in and try everything they have. You don't have to buy them. You still get some idea what fits what doesn't. The chances are you'll find a pair that you like at discount price, older model, just to move inventory etc. Buying online for the first pair isn't very good idea.
Edit: Try Performance bike shop, there are a few in San Diego. Their store brand shorts and bibs are very good at very reasonable prices.