I've been going with gg since they do good subs, and the quality is really good, but be warned that they include some of the commercials. I find the commericals to be kind of hilarious so I don't mind, and I like their translations, but I would guess the Chihiro ones are probably not bad (have not downloaded them directly, though, so I can't say for sure). Also, gg is a reliable subber and theirs come out the quickest.