@MYOS1634, you can get plenty of math at Duke. In fact, someone could double major in econ and some other quant field at Duke if they wanted to. That’s the power of a more flexible curriculum.
In any case, IMO, costs should matter.
And in general, I would not put LSE on the same level of HYPSM & Oxbridge, but note that LSE has extremely strong representation in the City and MC. On a per capita basis, LSE has more alums at McKinsey than any of HYPS or Oxbridge or anyone else besides MIT, in fact.