global variables vs. custom properties

[Tiemo Hollmann TB]

Hello,

I know, that similar topics has been discussed a few time, but didn't found
any hard facts

It is the usage of global variables vs. custom properties for non persistant
values, used at different parts within the app.

I know, that most people prefer custom properties, but is it just a question
of "school", or is there perhaps a difference in memory usage or other "hard
facts"?

Thanks

Tiemo