Have you tried Prezi?
(I work there.)
(I work there.)
To really focus the presentation to the speaker's voice I find that HAIKU DECK for iOS really removes bullet point syndrome. http://www.haikudeck.com/
(I don't work there.)
Fancy animations and zooms can't fix this inherent limitation of the slide format.
I've been using prezi for a few years now, and almost always get good audience feedback. Like any tool, you still have to know how to use it, it will not do all the work for you.
The best slide presentation software I've seen so far is SlideShow, but its for programmers only :)
Just waiting for an opportunity to using it in a real context!