I might be taking a break from Prezi for a little while and start using HaikuDeck for all of my presentations. This really well-designed app for iPad forces the user to focus on the most important point of any slide by limiting the amount of text and images that are on the screen at any given moment. What is most impressive is the amazing and seemingly endless collection of professional photographs which can be used as the backdrop for slides (you can also import photos from the photo roll or take a new picture). It's a free app and it comes with a bunch of great default themes (you can buy more 'themes' as in-app purchases)
I made a few slides for a presentation yesterday and ended up taking screenshots from my device so that I could import them into Explain Everything. I did find that you can export the file. It downloads as a .pptx file though you have to manually append the extension. The slides above are embedded from HaikuDeck.com.