If you'd rather buy once and stick with a set of apps and don't mind the lack of OneDrive storage and, in some cases, fewer apps, Office 2019 is likely a better choice.
With a subscription to Office 365, you will pay more for years of service, but you do get quite a few more features, including OneDrive storage and Skype minutes. While you'll get the core Office apps you love with either Office 365 or Office 2019, there are quite a few differences between the two options.
