Me too! Spent my gap year working at an awesome startup in London and learned a crazy amount. Sadly one now needs to work out whether taking up that place at University is worthwhile. For me, whilst staying in "the real world" is an attractive option, going to Uni seems like the choice which will open the most doors long run. Very happy to be proved wrong on that on, however.
I have no idea what the right answer, if there is one, would be for you, but here's the question that helped for me: Rather than thinking about what opportunities either might give you, looking 10-20 years ahead which option do you think you might most regret chosing?