It's not really that fast, about 8 hours in total of anime takes me 2 days to watch... Or is that weird? I don't have a lot of homework. No spoilers about Valvrave, already seen it this summer, currently watching season 2, I was also really impressed by the story, if you haven't gotten to the last few episodes of the first season you're going to be surprised xD
Higurashi no Naku Koro Ni has been on my computer for ages, but since I read the manga I always don't feel like watching it because I know what happens. I still don't fully understand the plot in it, the author really screwed up with timelines.
In a few years it will probably be cheaper when something better comes out, it's always like that.