Love this plugin. Just started using the free version together with WP 3.5 and the TwentyTwelve theme. Works great in initial testing on a simple 1 slider site.
The first thing that impresses is the UI of the Admin area which is clean, well organized and functional. Big payoff: enables simultaneous image uploads and super easy sorting and meta tag maintenance of individual images.
The free version works great, though pro Web developers and anyone who wants to support quality plugins like this should spring for the premium version.