DivX quality is roughly 500 Mb per hour of show. 400 Gb is therefore about 800 hours of television, which is about the SAME amount of hours that there are in a 31 day month.
Either you don't sleep at all and don't have a life, or you don't download near 400 Gb a month.
Hell, even if it is pure HDTV quality, which is about 4 Gb for an hour with compression, you would still have a 100 hours, or more then 3 hours of watching Anime every single day.
You either GOT to be kidding me, or you do not have a life worth speaking of....