I went to HBS so I can tell you a bit about it. The people there are extremely talented and driven, but the student body is somewhat overrepresented by bankers and consultants. Quite a few HBS students want to get into technology but don't really have the background for it. The most likely career path for HBS graduates is banking or consulting, or maybe private equity/VC for a smaller percentage. But Reid Hoffman articulated very well the sentiment that those who are likely to get into a school like HBS have managed their career and education very closely their entire lives, and many may not have the appetite for risk that is required by entrepreneurs.

If you can get into the GSB, I would highly recommend it. It is much more plugged into the startup scene and I think you'll definitely get a richer tech-oriented experience.