Specs are quantitative aspects of the option such as the price
Pros
Pro
Lets you create beautiful presentations that flow well
Prezi helps you create presentations that tell a story. The UI lets you create a storyboard for the presentation so it's really easy to design the big picture for the presentation and then drill down to the individual "slides".
The Storyboard UI makes it easier to think through presentations
Instead of being constrained by individual slides, Prezi lets you input all the various text & media you want to cover and then organise it into a logical flow later on.