My scenario is always on 24/7 in my computer that is also used as a "NAS" via file and print sharing (SMB).
If i buy let's say WD GOLD WD2005FBYZ, it costs me about 100€, which is not a high price.
If i buy WD2003FZEX from the same company (WD BLACK) it costs me 140€ and drive is worse than gold version.
WD BLACK = WD2003FZEX = 140€ 5years
WD GOLD = WD2003FZEX = 101€ 5years
SEAGATE EXOS = ST2000NM0045 = 97€ 5years