I've taken the Surfliner route (SB->LA) frequently while in college. Moving to NYC and taking the Acela (NYC to Boston) over 20 times, I have to say the east coast experience is amazing. The route is super popular with business travelers commuting to NYC or other major cities along the route. You show up, grab a seat, pop your laptop open, get some work done... wow you're at your destination. Hungry? Walk to the snack cart and grab a coffee or a beer, at a reasonable price.