What internship would sell better for a Summer ?

Hello everyone,

So I'm currently a student in a top 5 business school in France preparing an Msc in management. So next year i'll be going to my home country for 5 months, and not 3, Mauritius, and i've got some offers.

Keep in mind that not that much deals and everything happen in the country. So how would you rank those opportunities while knowing my objective is to break into "true" investment banking and to get a summer in NY or London next year.

I can also do a combo : like 2 months or something + 3 months of something else
- Transaction Advisory Services/Deals in a Big 4 (EY or PwC) (could be cool to do a lot of valuations)
- Financial auditing in the same two firms
- "Corporate Banking and securities" department of Deutsche Bank Mauritius, Barclays, HSBC, Standard Chartered
- Small PE fund (100 m €, so not that big)
- Small Asset Management firm

Or anything else you can think of ? (No true investment banking obviously)

Thanks a lot