Interesting school choices given your career goals and desire for a great experience. Would have though Haas and Sloan would have been obvious schools to apply to. Either way, congrats on your admits!
The most obvious part of the answer is this: both schools can get you into Tech on the west coast. Because of that, if you have a strong feeling towards one or the other for less tangible reasons, then you should not hesitate to go there.
Beyond that, I would personally go to Wharton. My belief is that Wharton's reputation in the business world is simply stronger. There are likely multiple execs at every interesting tech company from Wharton, as a result of it’s strong placement, longer history, and just generally larger class.
Moreover, not only do a much larger number of Wharton students start their own business (59 to 10), but also a significantly greater percentage (7.5% to 4%) of the class does. That means that you will be surrounded by more people with similar ideas and interests, and more opportunities to get involved on the ground floor with a start-up, if that’s what you desire. Plus, it simply means more likelihood that people in your network will have a cool business in a few years (or that alumni from a few years ago will have a cool business for you to join now). Finally, the bonus of the semester in San Fran is huge.
If you’re not sure about the students or experience though, then I’m not sure if it’s worth it. Then again, I know a number of Wharton students/grads, and none of them have described it as depressing.