I'm at Touro-NY. I know student who is a third-year at Touro-CA, and have visited the campus as well.
I'm very happy with the education I'm getting here in NYC. It was an adventure to move here and it seemed intimidating- but I couldn't be happier with my decision.
In terms of facilities- TouroNY has the advantage. It is a new school, that shouldn't be a surprise.
The area around the facilities- I would also give this to NY. Harlem itself isn't anything particularly appealing, but you're minutes away from everything New York City has to offer. Vallejo is not appealing in any way! The only advantage I see to its location is the proximity to San Francisco.
Education- I feel like we have worked through 95% of our growing pains here at Touro-NY and now we can finally get down to producing consistently good classes of students. Touro-CA currently has a bit of an edge with regards to faculty stability, however I see that leveling out within the next year.
While our clinical rotations have a bad reputation on SDN, they are not bad at all. We have a wide variety of experiences available to us- from situations where you are essentially one-on-one with an attending (without residents!) to the more standard situation of a larger group. While our core spots are not in manhattan, they are close and we have many more than we need.
And of course being in NYC is great for electives- there are many well known hospitals here for us to take advantage of.
PM if you have any specific questions, and good luck.