London: small boutique specialised IB or Bloomberg Sales&Analytics programme?

Hi all,

I got accepted to a tier1 part-time masters in London (think LBS, LSE, Imperial), which allows having a full-time job.

I got an offer from a sector-specific boutique IB's M&A team, but I don't have deal experience, so I assume it will be a very long summer internship. My other option is Bloomberg's Analytics & Sales programme, and I have hi-tech sales experience.

Pros and cons of boutique IB:
Deal experience
Boutique
Internship
Lower salary (app. GBP 8-10k per annum)
Very sector specific
Small team (5-7 people)
Exit opps?

Pros and cons of Bloomberg:
I already have relevant experience in tech sales
Protected weekends and snack bar
Allows me to concentrate on classes and CFA/CAIA
Mandatory analytics desk period sucks
Exit opps?

However, my part-time program lasts 2 years, and I believe, that I would still have a decent shot securing a FO position even after 2 years at BBG, but chances are that the boutique IB would not get me a more prestigious FO job.

What do you think? Which one shall I choose?

Thank you in advance.