256GB is indeed the sweet spot for typical users. 512GB if you play large games.
Windows on its own is quite capable of filling up a 128GB drive with restore points, update backups, and all sort of other junk when left in the hands of a typical user for a couple of years. I recently wiped nearly 60GB of pure OS-level junk (i.e. not caused by applications) from a family member's Windows 8.1 PC.
Windows on its own is quite capable of filling up a 128GB drive with restore points, update backups, and all sort of other junk when left in the hands of a typical user for a couple of years. I recently wiped nearly 60GB of pure OS-level junk (i.e. not caused by applications) from a family member's Windows 8.1 PC.