I couldn't disagree more with the post above.
I interviewed/rotated at UCSF, had friends who rotated, and have current friends who are there. I am also at a residency with people who rotated/interview at UCSF. It has a strong brand name, with good operative experience, but most of the people I talked with were underwhelmed. Some ranked this near the bottom. Trauma is ~4 months per year, but many of the attendings are double-boarded and will do sports/spine/joints cases. I didn't see one tibial plateau my entire month there, but what you see is so variable as you only spend one month there.
UCLA has a strong brand name, anything to the contrary seems ridiculous. I interviewed there and was really impressed. Some of my friends are PGY-2s there, and are doing scoli cases with attending, each doing their side. They are doing hemis by themselves with the attending not even in the room, and just heard their OITE scores were off the charts.
UW was amazing. I rotated there and loved it. There has been a lot of faculty turnover and a recent lawsuit against the chairman that has made things complicated. On trauma I definitely felt as though the attendings were doing >50% of the cases, but their volume is unmatched, and their residents are some of the smartest I encountered.
USC has great operative experience, probably the best out of all. But they had a mass exodus of faculty, and their didactics are terrible. Their OITE scores are generally very poor, and the program is very trauma based.
I did not interview at Stanford nor do I know anyone who is currently there. I have a few friends who rotated there, with half loving it and half saying it was terrible. It's hard to make a judgement as I haven't been there.
I would say tread lightly when listening to advice from people who are not residents at the program, who did not interview there, or who did not directly rotate. Out of UCSF, UCLA, USC, and Stanford, I would probably pick UCLA. I also completely disagree that the west coast is hurting, as many of the east coast programs were underwhelming, and many of my friends that are there are unhappy. That's not to say there aren't amazing east coast programs. Choose the right program for you.