It’s very flexible
I like to setup a single gallery for the photo cycle itself and all that needs to be done is upload the pictures to that gallery and it's good to go. However, you can change how long the photos display, length of transition time between photos, display size of the photos and order of the photos. You can also set up links for each picture with a minimum of work.
Best of all is the ease of use to rotate pictures on an ongoing basis. You can simply add or remove pictures from your gallery and they automatically update in the cycle. No messing with editing or recreating a new file using any specific program, so you can show your best pictures at any time.