After trying Prezi late last year, I discovered I prefer PowerPoint.  It feels as if PP has better variety with more options.  The way Prezi moves from one screen to another feels disjointed to me.  However, Prezi is useful for the choice it provides students in form of presentation.  I always prefer giving choices when possible.  Below is my prezi from a literature study of one chapter of The Skin That We Speak by Lisa Delpit.  The book conveys first account experiences about the impact of language in the classroom.