I would not worry about the curriculum. Curriculum is easy to misjudge. I can put cool classes on the list but they may be cool/not cool and the most boring class may end up super helpful. My Business Law class for example was the most helpful in my MBA (my humble opinion) as I remember the most of it. I can't remember anything from most of the other classes... case studies tend to be the most memorable.
Anyway, I would say it is tricky. MBS has a few nice things including the consulting project/projects which basically gives you a budget to execute a case for a client (usually a company) which I know many of the students enjoy during the second year (you are doing it in the second semester right before you graduate I believe) so it also helps to free up time to look for a job and sitting on your butt in a class....
I think Simon's strength is Finance and if you are looking to do Finance, I would recommend it.
I am not too sold on the UK. I think this year was terrible for the UK.
https://www.cnbc.com/2021/02/12/uk-econ ... ecord.html ... which you will have 2 more years to go until you graduate and perhaps there will be the biggest revival so I would not make bets per se... .At the same time at Simon you would have 3 years of a work OPT permit after graduation, which beats 2 years in the UK. Not sure if it is easier to do PR/Green card in the UK than the US. That I have not researched.
P.S. It is pretty ridiculous you have not done research or have a preference for the country/future employers. I would suggest doing that rather than looking at rankings based on sometimes very old data ....