Axure is a great tool if you want to create interactive prototypes using real data. You can import data and use it as working prototype.
With Axure's new release, it's easier to work with your design team. Axure's team feature makes it easy for teams to collaborate on the same project.
Axure has a great community support and tutorials for any newbies. They are pretty good with responding to any request and/or issues with your files.
It's easy to share the prototype with Axshare - and every time you make changes to the prototype, you are still using the same link. So this means, you can create a unique link and share it with the clients. After any changes that are made to the file, just save the same link and clients will be able to see the changes.
Another nice feature of Axure is you can package all the prototype into HTML and hand it over to dev team. The code sometimes gets wonky though.
Built-in libraries as well as easy way to import libraries makes it easier to create user flow diagrams, animations and build pages
Apart from all the above great features that my team frequently uses, Axure's Preview feature is a good way to see your work in progress prototype on a browser.