It all depends on what you value. If you go to a more well known school, usually there are better professors, and your peers will be smarter too. Also, what you should consider is what the size of the schools are, whether you want a big university with lots of peers, or a small university with more opportunities to talk to your professors. I have heard lots of good things about Imperial College in the field of Engineering and science, as there is a person I know who is currently attending there. Since you have the skills to go to that university, you will do well in either of your college choices. And you don't really have to think too much into the future, cause when you attend your university, your thoughts might change and decide to go to graduates school.
So good luck!