AFAIK, it's the only usually-reliable extension one can use to DL in-page content. Lately it's had trouble capturing some streaming video, which was always one of its particular specialties. But you have to appreciate what a cat-and-mouse game this must be, as content hosts and download-utilities devs keep trying to stay ahead of each other.
As soon as VDH catches back up, I'll be glad to return here and add a 5th star. Meanwhile, thanks for the great work, guys!