SNA is very nice compared to OAK
SNA has the AA AC and the UA RCC. Next year I'll switch from the AC to the ACC to get the yogurt and bananas for breakfast. AC just has some hard little muffins so it's usually a Starbucks run and then the AC. You can sometimes get a free wireless signal at SNA but it depends where you're sitting.
After a missed flight at OAK I prepared mentally for a very long layover and asked a TSA rep where the airline clubs were located. He smiled a big smile and replied: "What man, we don't got none of those -- this is Oakland!!".
Fortunately, WN flys from OAK and you can usually avoid painful delays there by a mad dash to the second terminal for an at-the-counter ticket purchase to catch a WN flight.