I was really pleased with flying Southwest for a long time mainly for their pricing but after discovering great prices with Virgin I have no problem switching.
The aircraft's interior is illuminated by neon lights and offers comfy seats with a personal screen which offers many entertainment options. You can also hand hold the remote.
I do prefer to fly into Oakland International only cause it is a more direct drive home and Virgin unfortunately does not fly into this airport but landing in San Francisco International has its advantages too. It is in my opinion one of the most beautiful airport.
The only annoying thing is that you can become a member accruing points with each flight but they do not issue an official card so you really have to keep the number in a safekeeping place. The service has always been great and so far smooth landings!