SS Presentation:Data Show or OHP?

Dear ALL
I used to make SS & TQM Presentations and Seminars using mostly the “old methodology”OHP.I feel more comfortable using this aid (for several reasons).Somebody advise me to shift completely to the “Dat-Show”.What is the most important aspect in SS presentation:the “type”of the training’s aid or the content,although non of my students has complained sofar?I think it is important to focus  some light on this topic as one of the CNN article has raised the question (just recently):Does PP make us more stupid?So I believe it is really a relevant question.Thank You.                               MMAN