It looks like it's a lot more amenable to customization. I've used S5 for many presentations, and there's a limit to how much you can customize the look withou

It looks like it's a lot more amenable to customization. I've used S5 for many presentations, and there's a limit to how much you can customize the look without getting into nasty hacks. It also doesn't have any sort of theme or plugin architecture. Basically, deck.js looks like S5 for the modern era.