MSc Finance at Imperial or Bocconi

Bocconi's MSc Finance 100% for the following reasons:

1) it's a target uni both in the UK and across Europe (especially Germany and Switzerland, where salaries are highly competitive), meaning that you'll get offers regardless of the location and the geographical coverage of the desk;

2) it offers a variety of IB-focused in-company trainings worldwide, from the City of London to the UAE;

3) although it's numerate, Bocconi's MSc Finance is still regarded as an IB feeder, whereas Imperial's has historically placed better in S&T and Structuring, despite its attempts to attract people interested in IB and rebrand itself as one;

4) although Bocconi's MSc Finance looks pretty quanty, you should not forget that many students on the programme have a background in business/management rather than pure economics/finance (which they compensated with a high GMAT/GRE, presumably), implying that the concepts you'll be dealing with cannot be that difficult. Conversely, Imperial's cohort is fluent in calculus and econometrics from day 1 and you won't be able to get away from the most quantitative modules, most of them being compulsory. Also, at Bocconi you will be able to major in Investment Banking during your second year;

5) because the are more people on Bocconi's MSc Finance (mind that there's an Italian cohort as well) than Imperial's, the programme is better represented in the City, where some desks are filled with Bocconi grads;

6) as a Bocconi student you'll be able to get into top London banks smoothly and, therefore, visa won't be an issue. Different story, should you not be able to get into a sponsoring bank after graduating from Imperial, you'll have to rely on a temporary post-study visa, which UK recruitment hasn't even internalised so far. Most mid-tier banks (those who are more unlikely to sponsor EU applicants, even though most of them are licensed to lol) are already mentioning that candidates should have a settlement agreement in their pockets prior to applying, meaning that they cannot even be bothered with helping you transition to a full work visa once the post-study one expires (it's a pretty smooth process to be fair, but whatever);

7) from a quick LinkedIn search you'll see that Bocconi's MSc Finance people manage to get SA offers in IB from top banks on a consistent basis, despite not having prior relevant experience. Even people coming from low-ranked Italian unis, who manage to get into the Italian cohort with a super high GPA, an average GMAT/GRE/Bocconi Test, and poor extracurriculars, eventually end up with top-notch offers from London banks. To me this exemplifies Bocconi's strength with regard to IB placement, since such a candidate would never be able to secure an offer in the UK if it weren't for Bocconi's reputation. Conversely, successful applicants from Imperial have already got a solid CV, which makes it hard to assess the intrinsic added value of its MSc purely with respect to IB placement (value that is undebatable when it comes to S&T and Structuring, Imperial being a science school first and foremost);

8) since you got into Bocconi's MSc Finance without a GMAT/GRE/Bocconi Test, you must be a top student (GPA above 28 or something, is that right?). Hence, you should be eligible to attend the first in-company trainings already in Fall. Moreover, if you managed to put together such a strong weighted average over a 3-year time span, I don't see why you shouldn't be able to do the same on the MSc. You'll be applying for SA roles as soon as you enter the programme, therefore you'll have to focus on your first semester mostly. 

Obviously this is just my personal opinion :) Hope it helps!