imho.

500gb is enough. unless you plan to DL a lot of games onto your system rather than buy disc.

1tb if you gonna DL digital copies and maybe copy movies and stuff. but anyways. if you get 500gb can upgrade to 2tb like what soul_fly9900 did for RM345

for me 500gb is enough. using netflix for movie and seires so no need to datahoard on the ps4. and i prefer physical disc at least can easy resell and trade with kawan.