Worth reneging on S&T offer?

I have a London Deutche/Barclays offer for S&T Summer 2027. What markets related internships are worth reneging on this for. I'm aware there are better places, but in terms of expected value i.e. (Probability that firm won't find out and pull offer) x (How "good" the opportunity is). which would be worth it? Quant shops yes I assume. S&T for Goldman? JPM? Thoughts appreciated.