Kassetten or stitched through?

In the costruction of quilts and duvets there are two main systems, here's a brief explanation of how they work:

STITCHED THROUGH SYSTEM:

This product turns out to be very light and comfortable against the skin, and has an exceptional hygroscopic power thanks to which it creates the best conditions for a really restful sleep. Fixed square-sewn quilting keeps the filling homogeneously distributed; in this way the quilt fullfils its thermo-regulating action very effectively and in every zone.

KASSETTEN(BAFFLED) SYSTEM:

With spacers internal to the seams, allowing a homogeneous distribution of the filling within the squares and entirely avoiding the creation of "cold zones".