Models Builder - AppData or PureLive?

We are building a new website in 8.8 and ideally we would like to make it as 9 friendly as possible.

Can you let me if we should use Model Builders using the AppData or as PureLive?

Many thanks
Jon


This is a companion discussion topic for the original entry at https://our.umbraco.com/forum/103970-models-builder-appdata-or-purelive