Flying into LAX or SNA or LGB?

I'm thinking about flying into one of these airports. John Wayne Airport (SNA) and Long Beach (LNG) are the closest, LA International Airport (LAX) could be a hassle if there is traffic. I have used SNA about a year ago and had no issues what so ever. I don't want to get a rental car and would be relying on shuttles or cabs for transportation.

Can you share your prior experiences traveling in this area?

SolidworksSolidworks World 2011 And The Top Ten List