[tptacek]

That depends on what you want to do with your career.

Generally, internships at startups are more flexible and open-ended. Internships at BigCos can be more rigid and less interesting.

If you believe you're going to spend your career in startups, you're obviously better off interning among startup people.

But, be careful: a serious internship at a large, technology- driven company (GS qualifies) is better than a poorly- managed internship at an inept startup.

Also, be aware that an internship at GS carries weight among SFBA startups, but an internship at a random SFBA startup probably carries no weight on Wall Street.