The only negative is that there are so many settings that it takes a while to get it configured just right (OK, I'm picky ). I prefer to see each image in all its fullscreen glory, and ArtSage will allow me to do that.
ArtSage is freeware. If you like the program, please consider making a donation. Make a donation of any amount and receive ArtSage Pro, with an active catalog that supports shell operations (drag/drop, cut/copy/paste, shell menu) for file management.