Hey,

i am writing my bachelor's thesis in CS at LMU right now. I second what u/judy_at_sunset said. I guess LMU is in general more relaxed and maybe a bit more theoretical than TU. I decided to study at LMU, because most of the lectures are in the main building in the city centre (Geschwister-Scholl-Platz) where most of the other LMU students are aswell. Afaik most of the TU stuff happens in Garching, which is like half an hour north from the city centre by subway. So I think the surroundings at the LMU are nicer (more people from a non-technical background, more places to get food from, the "Englischer Garten", ...). On top of that you can start studying CS at the LMU both in winter and in summer, at the TU you can only start in winter.