The best feature of JIG is without doubt the personal support of Firsh, the software author. I have been using NextGen WP plug-in for a number of years but its support for the display of images is very lacklustre. With JIG installed for testing my site was quickly and easily given a fresh coat of paint, the image display options and flexibility of the JIG options allows images to displayed in a large number of ways so there will be an option to suit everyone. If JIG doesn't have a feature you need then talk to the author, he is always open to suggestions. Currently my site has over 6,000 images and NextGen and JIG perform flawlessly together and has been used to develop the speed and performance of the plug-in.