Forming realistic late-type galaxies is a major challenge in cosmological
simulations of galaxy formation. In this talk, I show the latest results 
on this topic for the moving-mesh code AREPO by presenting a series of 
hydrodynamic zoom simulations of eight haloes previously studied in the 
Aquarius project. These simulations feature a significantly improved version 
of the baryon physics modules including metal line cooling, a 
phenomenological prescription for galactic winds and black hole feedback and 
a self-consistent treatment of the stellar evolution that tracks the mass and 
metal return to the gaseous phase of evolved stars. The simulations 
demonstrate the ability of AREPO in producing discs that agree reasonably 
well with the scale relations and the observed properties of late-type 
galaxies, and they sensibly improve upon the results obtained in earlier work 
for the same objects. As a last point, I will also briefly discuss some 
preliminary results on the inclusion of magnetic fields -- via ideal MHD --
in these simulations.