Photoplog has the hands down best integration. The popup that allows members to drop thumbnails of their uploaded images into their posts, the fact that Photoplog images show up in the search.php search results, etc... WAY better than anything else I've seen on vB.
vbGallery although i modified its code heavily to get the SEO URL's going. A PITA to upgrade but am happy with the 3.8x+vbgallery combo so no real need also.