They are both from big name hospitals here, I guess you can say.
I've heard many bad things about Northeast Methodist. They have a high turnover rate. But they have other good Hospitals that are great.
Christus Santa Rosa is a pretty good hospital. I live near New Braunfels so that's where I would take a job. Depends where you're coming from but usually it's against traffic. The hospital is not as crowded as the downtown one. They have pretty good benefits also.
I guess they both have good opportunities to move up & move around SA but I recommend Christus.