What happens if we start chanting We Want Baroni

>>530722978
>mile
>mile
>medium
>long
>medium
>sprint
>sprint
>sprint
>LONG AGAIN OUT OF NOWHERE
Easily my least favorite career to play bitch can't make up her mind

I asked this on /sci/ but that board is practically dead so i'm asking here, maybe there is a fellow STEMfag who can give me advice:

Hey guys, i am finishing the first year of my master's program in computational mathematcis. I have a bachelor's in pure mathematics. I want to go into the industry after i graduate, but i am having trouble choosing a subject for my master's thesis. I am split between formal verification of some cryptographic protocol and some machine learning/deep learning/data science algorithms and optimisation and stuff.
Which would look better on my CV, and what is more sought after? Thanks in advance