I tried at least 6 other plugins. This beats them all. I just needed a thumbnail gallery with captions that opened in a lightbox with a readable caption.
1) Other plugins didnt have captions, tried to fit the captions on one line (which displaced the next image in the row--messing up the neat grid appearance), or made the captions too large.
2) Other plugins didnt allow seo of my gallery with text.
3) Other plugins didnt allow batch uploading.
4) Other plugins showed unreadable captions in the lightbox, and didnt let you move or change the font.
5) Other plugins had 3, 4, and even 7 tabs of selections, but still didn't have the selections that I (and probably a bunch of other people) really need. And I don't want all of that clutter anyway.
This works great, just optimizing the standard wp gallery (which stinks by itself). And they helped me with a few simple css snippets, which i added to Genesis for the perfect gallery plugin!