SSD is also my choice (silent, fast).
QLC SSDs are less expensive for the same capacity as other technologies, but have a shorter lifespan when used intensively.
Storing music does very little writing (and the roon database is on the other SSD) - so the profile fits really well with QLC.
As the expert says here SSD drive for Nucleus+ - #17 by danny
Like @Martin_Kelly I’ve gone for a 4TB Samsung QVO.
BTW Samsung replaced a previous SSD for me when it failed 4.5 years into a 5 year warranty with no fuss at all!