> "As a challenge, last year, when I taught a class (as a volunteer)- I made all my slides with Impress."

You missed this bit?

I did use Impress to make slides for 7 classes (>100 slides).

I will go with PP for now.

And, yes, using computers since 6, having one for myself since 10- I need not really explicitly learn UIs of programs intended for non-tech mass users.